Australian-Coins Forum

Australian Coins, Banknotes and Exonumia => Australian Errors and Varieties => Topic started by: markn on August 15, 2013, 10:03:22 AM

Title: 4.58 gram 1984 Dollar
Post by: markn on August 15, 2013, 10:03:22 AM
PPH and I have a new coin.  We'd love to say we found it in an old pilots helmet, or laying on the footpath, or dug it up in our back yard, or found it in our change.  But that would be a furphy.  

In fact, we bought it as a speculator off of eBay (thanks to a member here who pointed it out to us).  Today it arrived.  It weights 4.58g, appears to be copper nickel, is extremely weakly struck and does not appear to have been toyed with post mint (other than seeing a bit of circulation).  

So, does anyone have any ideas what planchet it might be struck on?  Anyone know where the RAM got their blanks in 1983/1984?  Or whether they were striking coins for other countries?

(http://www.australian-coins.net/gallery/albums/userpics/10001/australia-1984-dollar-unknown-planchet-o.jpg)

(http://www.australian-coins.net/gallery/albums/userpics/10001/australia-1984-dollar-unknown-planchet-r.jpg)
Title: RE: 4.58 gram 1984 Dollar
Post by: Goldseeker on August 15, 2013, 10:08:12 AM
Can you put up a scan of comparison of the thickness of the above to a normal $1 coin please.
Title: RE: 4.58 gram 1984 Dollar
Post by: markn on August 15, 2013, 10:15:56 AM
Your wish is my command.

(http://www.australian-coins.net/gallery/albums/userpics/10001/australia-1984-dollar-unknown-planchet-thickness.jpg)
Title: RE: 4.58 gram 1984 Dollar
Post by: trout on August 15, 2013, 10:22:33 AM
All I can think of is a 10 cent planchet But that Is 5.66g.
Being made of cu/nickel would explain the weak strike , the press would have been set up to take the softer ali/bronze planchet.

Sweet pickup mate , A really unusual coin :good:
Title: RE: 4.58 gram 1984 Dollar
Post by: MattGold on August 15, 2013, 10:49:04 AM
http://www.australian-threepence.com/blog/2012/12/australia-1984-one-dollar-error-struck-on-copper-nickel-10c-planchet.html

I was thinking the 10 cent planchet too only because I remember seeing this when I first started collecting haha.
Title: RE: 4.58 gram 1984 Dollar
Post by: markn on August 15, 2013, 10:52:09 AM
Quote from: 'MattGold' pid='25003' dateline='1376529544'http://www.australian-threepence.com/blog/2012/12/australia-1984-one-dollar-error-struck-on-copper-nickel-10c-planchet.html

I was thinking the 10 cent planchet too only because I remember seeing this when I first started collecting haha.

When it arrived I thought 10c planchet too.  But it's nearly a gram underweight.  The Canadian Nickel of that period is 4.6g and is a similar looking copper nickel alloy.  I wonder if the RAM and the RCM were sourcing planchets from the same place?
Title: RE: 4.58 gram 1984 Dollar
Post by: ausjack on August 15, 2013, 10:54:47 AM
wow that's a good score Mark :good: these things trip me out how one, they happen and two, how they make it out..very strange indeed
Title: RE: 4.58 gram 1984 Dollar
Post by: enworb on August 15, 2013, 10:56:06 AM
Very cool!
Title: RE: 4.58 gram 1984 Dollar
Post by: trout on August 15, 2013, 10:57:21 AM
These are the speccs for a 1984 Canadian 5 cent coin.
Looks like a pretty near perfect match :ok:


Diameter: 21.21 mm
Thickness: 1.70 mm
Weight: 4.54 g
Edge: Smooth
Composition: 0.75 Copper, 0.25 Nickel
Title: RE: 4.58 gram 1984 Dollar
Post by: Unicorn on August 15, 2013, 12:58:28 PM
Very cool ...... no sure how you managed to get that one past ShaneW the oddity wicket keeper!

The side view sure is lean in comparison.
Title: RE: 4.58 gram 1984 Dollar
Post by: Goldseeker on August 15, 2013, 08:08:54 PM
Thanks for that markn, you have truly found a wonder.   Maybe a couple of scans shot off to the RAM may get some answers.

One can only ask.
Title: RE: 4.58 gram 1984 Dollar
Post by: purplepennyhunter on August 15, 2013, 08:28:43 PM
We're doing our own sleuthing. This was right around the Mint wound down it's own production of planchets in favour of Korean imports. I have the foreign coin production list from the 84 RAM report on it's way and another idea is a medal or token perhaps the monorail.

Either way it's a dead ringer for a 10c except that it's a bit under.
Title: RE: 4.58 gram 1984 Dollar
Post by: trout on August 16, 2013, 09:14:59 AM
Quote from: 'purplepennyhunter' pid='25076' dateline='1376564323'We're doing our own sleuthing. This was right around the Mint wound down it's own production of planchets in favour of Korean imports. I have the foreign coin production list from the 84 RAM report on it's way and another idea is a medal or token perhaps the monorail.

Either way it's a dead ringer for a 10c except that it's a bit under.

Any updates on this coin yet?
This is by far one of the most interesting coins posted for quite a while.
I'm sitting on the edge of my seat here Mate :angel:
Title: RE: 4.58 gram 1984 Dollar
Post by: markn on August 16, 2013, 10:00:43 AM
Quote from: 'trout' pid='25114' dateline='1376610299'Any updates on this coin yet?
This is by far one of the most interesting coins posted for quite a while.
I'm sitting on the edge of my seat here Mate :angel:

Nope, nothing.  We're waiting for the foreign coin section of the 1984 RAM annual report to show up in the post.

It's a really interesting coin, that's for sure!
Title: RE: 4.58 gram 1984 Dollar
Post by: trout on August 16, 2013, 10:36:22 AM
I imagine that this one will end with a first class ticket to the States :good:
Title: RE: 4.58 gram 1984 Dollar
Post by: purplepennyhunter on August 16, 2013, 10:56:36 AM
The high cost of slabbing errors doesn't have us diving in get get our errors slabbed. We've had a couple done each which was really just testing the waters.

If they slabbed this now they would just put the planchet weight on the slab. But if we can identify it and have it graded as such will increase it's value I believe.
Title: RE: 4.58 gram 1984 Dollar
Post by: ausjack on August 16, 2013, 11:18:54 AM
identify it and have it graded as such will increase it's value I believe.

Ohhhh, now that's handy to know. Thanks PP :good:
Title: RE: 4.58 gram 1984 Dollar
Post by: purplepennyhunter on August 16, 2013, 11:44:32 AM
Doesn't "1995 UN 20c struck on thai temple token blank" sound better than "underweight magnetic 20c"?? Or "$2 struck on euro 10c planchet" better than "ugly weakly struck underweight $2"??
Title: RE: 4.58 gram 1984 Dollar
Post by: markn on August 16, 2013, 11:45:20 AM
Quote from: 'purplepennyhunter' pid='25117' dateline='1376616396'If they slabbed this now they would just put the planchet weight on the slab. But if we can identify it and have it graded as such will increase it's value I believe.

You're absolutely right.  Identifying what this coin is struck on could double or even triple the value.
Title: RE: 4.58 gram 1984 Dollar
Post by: purplepennyhunter on August 16, 2013, 11:58:54 AM
Does anyone have a 1985 Jupiters Casino One dollar gaming token, it could be struck on one of those planchets?
Title: RE: 4.58 gram 1984 Dollar
Post by: accumulator on August 16, 2013, 12:46:14 PM
Could even be a Dreamworld Token planchet,excellent score & i hope you can find a match.

you might be able to ask this seller for an accurate weight.  http://www.ebay.com.au/itm/Dreamworld-Gold-Coast-Queensland-Token-X2-/111076522505?pt=AU_Exonumia_Medals_Tokens&hash=item19dcad3a09&nma=true&si=J6Uuw%252Ffnyd25Mih23RbdknJF0TM%253D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557

Nope ,not a dreamworld planchet , Dimensions:   25 mm (Diameter)
Weight:   5.525 g (Weight)
Title: RE: 4.58 gram 1984 Dollar
Post by: purplepennyhunter on August 16, 2013, 01:39:35 PM
Quote from: 'purplepennyhunter' pid='25124' dateline='1376620134'Does anyone have a 1985 Jupiters Casino One dollar gaming token, it could be struck on one of those planchets?

OK I don't think it is. This token is way bigger.
Title: RE: 4.58 gram 1984 Dollar
Post by: enworb on August 16, 2013, 02:05:31 PM
A while ago there was a member who signed up from Adelaide who collected casino chips. It might be a good idea to contact him.
Title: RE: 4.58 gram 1984 Dollar
Post by: Cobwebs on August 16, 2013, 02:39:04 PM
Several years ago the Mint had a display of coins that had gone through the start up process. Basically getting the press pressure right. I don't know if the display is still there or not, if it is, it is worth taking a look.

The scan of the dollar does not look consistent with a weak strike but more like uneven wear.
A near 30 year old coin that looks different, is thinner than normal does not mean it is an error.
The link to the $1 struck on a 10c planchet shows a reasonably good strike, so good strikes can occur on cu/ni planchets even though the presses are set up for al/br.
Title: RE: 4.58 gram 1984 Dollar
Post by: purplepennyhunter on August 16, 2013, 02:54:06 PM
Quote from: 'enworb' pid='25139' dateline='1376627731'A while ago there was a member who signed up from Adelaide who collected casino chips. It might be a good idea to contact him.

Yep tried him :angel:
Title: RE: 4.58 gram 1984 Dollar
Post by: trout on August 16, 2013, 03:20:45 PM
I cannot find any reference in my Canadian resources that mention 5 cent coins being manufactured in Aus.
There is however some references the  Philadelphia Mint manufacturing some coins.
The Canadians changed from 0.995% Nickel to  0.75 Copper, 0.25 Nickel   in 1982.
the RAM may have been involved in producing planchet's for these, I don't know for certain.
as 1985 was a low mintage year for Australian cupro/Nickel coins I imagine they would have had the time and resources spare to be able to produce the planchets for Canada.
Just throwing possibilities out there :angel:
Title: RE: 4.58 gram 1984 Dollar
Post by: markn on August 16, 2013, 03:42:49 PM
Quote from: 'Cobwebs' pid='25140' dateline='1376629744'Several years ago the Mint had a display of coins that had gone through the start up process. Basically getting the press pressure right. I don't know if the display is still there or not, if it is, it is worth taking a look.

The scan of the dollar does not look consistent with a weak strike but more like uneven wear.

I'll disagree with you there, it looks completely like a weak strike.

Quote from: 'Cobwebs' pid='25140' dateline='1376629744'A near 30 year old coin that looks different, is thinner than normal does not mean it is an error.

It's not just a bit thinner, it's only just over 50% of the weight.  Given that an extremely worn coin (in Poor condition) shows almost no design and is typically still at least 75% of the original weight it's safe to assume this coin was struck underweight.  So, it is not worn and it is not damaged.

Quote from: 'Cobwebs' pid='25140' dateline='1376629744'The link to the $1 struck on a 10c planchet shows a reasonably good strike, so good strikes can occur on cu/ni planchets even though the presses are set up for al/br.

The $1 on the 10c planchet shows weakness in many of the same spots this coin does.  When I have some time later I'll circle the areas I'm talking about.
Title: RE: 4.58 gram 1984 Dollar
Post by: purplepennyhunter on August 16, 2013, 03:57:46 PM
Quote from: 'Cobwebs' pid='25140' dateline='1376629744'Several years ago the Mint had a display of coins that had gone through the start up process. Basically getting the press pressure right. I don't know if the display is still there or not, if it is, it is worth taking a look.

The scan of the dollar does not look consistent with a weak strike but more like uneven wear.
A near 30 year old coin that looks different, is thinner than normal does not mean it is an error.
The link to the $1 struck on a 10c planchet shows a reasonably good strike, so good strikes can occur on cu/ni planchets even though the presses are set up for al/br.

The display at the RAM (don't know if it is still there) was of proof 50c showing the strike at different pressures. Correct pressure was 140 tonnes. The image below is that coin struck at 20 tonnes pressure.
(http://www.australian-coins.net/gallery/albums/userpics/10002/50c-weak-20-tonnes.jpg)
Title: RE: 4.58 gram 1984 Dollar
Post by: markn on August 16, 2013, 04:05:05 PM
(http://www.australian-coins.net/gallery/albums/userpics/10001/australia-1984-one-dollar-wrong-planchet-weakness.jpg)

The dollar on the 10c planchet on the left, the unknown planchet is on the right.  Remember the 10c error weighs 5.66g while the unknown errors is 4.58g (a full gram less).  You can see the similar areas of weakness circled.    It's a similar story on the obverse.  Interestingly the coin has a noticeable wire rim as indicated by the red arrows.  This suggests two things.  Firstly, the coin was put through a rimming machine and likely had nice high rims formed.  This means the localised striking pressure at the edges was high meaning some metal squeezed between the dies and the collar resulting in the wire rim.  Secondly, the wire rim is still quite prominent and sharp to touch, so the coin wasn't in circulation very long.

A further indication that the strike is weak is that the queens shoulder is directly behind the largest kangaroo's leg.  And not surprisingly the leg is very weak due to the metal flowing into the queen's shoulder.
Title: RE: 4.58 gram 1984 Dollar
Post by: Cobwebs on August 16, 2013, 04:09:19 PM
My main concern with the image, is the small lip on the rim. This appears to be raised.
If this is the case, then the press pressure was good. The mint called this "squirting". Seen on a lot of coins today.

Sorry, got to go to work, great that you disagree. I'll be back.
Title: RE: 4.58 gram 1984 Dollar
Post by: markn on August 16, 2013, 04:14:31 PM
Quote from: 'Cobwebs' pid='25159' dateline='1376635159'My main concern with the image, is the small lip on the rim. This appears to be raised.
If this is the case, then the press pressure was good. The mint called this "squirting". Seen on a lot of coins today.

I agree that's exactly what it is.  But if the coin had been through a rimming machine it would have had high rims before being struck and this would easily explain the "squirting" as you call it or the "wire rim" as I call it.
Title: RE: 4.58 gram 1984 Dollar
Post by: Fulvio on August 16, 2013, 04:24:13 PM
Quote from: 'markn' pid='25161' dateline='1376635471'... if the coin had been through a rimming machine...

"IF"? What planchets don't normally get rimmed?
Title: RE: 4.58 gram 1984 Dollar
Post by: markn on August 16, 2013, 04:49:37 PM
Quote from: 'Fulvio' pid='25162' dateline='1376636053'
Quote from: 'markn' pid='25161' dateline='1376635471'... if the coin had been through a rimming machine...

"IF"? What planchets don't normally get rimmed?

I am not sure all one cent coins were.  At least some 3d's didn't (I've seen genuine 3d and 1c clips without Blakesley effect).  Dodecagonal 50c coins don't.
Title: RE: 4.58 gram 1984 Dollar
Post by: Fulvio on August 16, 2013, 05:30:23 PM
Quote from: 'markn' pid='25165' dateline='1376637577'I am not sure all one cent coins were.  At least some 3d's didn't

Well, ya live and learn! Thanks Mark. Clearly I meant to say round coins... :)
Title: RE: 4.58 gram 1984 Dollar
Post by: robbiegal on August 16, 2013, 06:13:29 PM
Quote from: 'Cobwebs' pid='25140' dateline='1376629744'Several years ago the Mint had a display of coins that had gone through the start up process. Basically getting the press pressure right. I don't know if the display is still there or not, if it is, it is worth taking a look.

The scan of the dollar does not look consistent with a weak strike but more like uneven wear.
A near 30 year old coin that looks different, is thinner than normal does not mean it is an error.
The link to the $1 struck on a 10c planchet shows a reasonably good strike, so good strikes can occur on cu/ni planchets even though the presses are set up for al/br.

do you mean this one?
(http://i1285.photobucket.com/albums/a585/auntyrobbs/1701201020100117_35_zps2f6e2ab2.jpg)
Title: RE: 4.58 gram 1984 Dollar
Post by: markn on August 16, 2013, 06:40:03 PM
Quote from: 'Fulvio' pid='25170' dateline='1376640023'
Quote from: 'markn' pid='25165' dateline='1376637577'I am not sure all one cent coins were.  At least some 3d's didn't

Well, ya live and learn! Thanks Mark. Clearly I meant to say round coins... :)

Don't take my word as gospel.  Just because I've seen clips without Blakesley doesn't mean they weren't rimmed intentionally.  Perhaps they missed the process accidentally.

Here's an example of a 1c that wasn't rimmed:

http://www.thepurplepenny.com/966,broadstrike-error-australian-1966-1-cent.html

But is it an error (uh flaw :dodgy:) because is wasn't rimmed?  Perhaps the larger diameter meant it didn't sit in the collar and was thus struck out of collar?

Now that I think of it I don't believe I've ever seen a rimmed 1c blank.
Title: RE: 4.58 gram 1984 Dollar
Post by: Fulvio on August 16, 2013, 10:18:50 PM
Quote from: 'markn' pid='25182' dateline='1376644203'flaw

Yup, flaw. And a lovely one at that... you open to offers? :)
Title: RE: 4.58 gram 1984 Dollar
Post by: markn on August 17, 2013, 08:30:57 AM
Quote from: 'Fulvio' pid='25213' dateline='1376657330'Yup, flaw. And a lovely one at that... you open to offers? :)

There's an offer button on the page.  Offer away, I am sure PPH will be kind.
Title: RE: 4.58 gram 1984 Dollar
Post by: robbiegal on August 17, 2013, 09:52:51 AM
I sold one like that a million years ago on ebay and it went for far more that that asking price
they are tremendously cute those mis-struck 1 c pieces
and fairly uncommon as well
Title: RE: 4.58 gram 1984 Dollar
Post by: Cobwebs on August 17, 2013, 04:57:36 PM
Thanks PPH & Robbiegal that is what I remember. When I was at the Mint I was with an employee and we chatted several minutes on the subject of weak strikes. I thought there was a coin there that had more than 140 tonnes pressure but obviously I was mistaken. In our chat he told me that over pressure caused squirting so the pressure was backed off. On circulation coins it occurs at times due to mass production, they aim for good die life and good strikes.

markn - back to the inconsistent weak strike, 1st the definition.
"Weak strike - A coin exhibiting an incomplete strike (not fully formed) all over, or a partial incomplete strike of the design. Caused by insufficient pressure to push metal into all the nooks and crannies of the die, improper die spacing, or the planchet being thinner than normal."

On a weak strike the centre of the coin will be bolder than the outside

The inconsistencies I am talking about are.
There appears to be a strip across the Obverse from ZA in elizabeth to ST in australia which is bold, the whole legend should be more even.
On the Reverse the middle roo has eyes this is near the rim, yet the 2nd roo behind the 1 does not, this is closer to the centre.
There appears to be a depression from the base of the 1 across to the A in dollar.
The R in dollar appears to be too bold.
Then there is the wire rim, to me that suggests a good or reasonably good strike. Will it have weak spots, I would say yes, but this doesn't mean it is a weak strike.
It appears to be something else that has happened to your coin.

A better image comparison would be another coin that is a weak strike.

Re; the thin planchet, it obviously is, my comment was a poorly worded one, wanting to say that thin planchets don't always mean you get a weak strike.

If it is a cu/ni planchet, the only ones I'm aware of are the Tonga (1975 to 1990) 23.6mm, 5.69gms, for their 10 seniti, cu/ni.
To the best of my knowledge the mint only produce blanks for overseas in the early 70s, but I'm not sure which type.


Fulvio - It's an error.
Flaws occur on the die then transferred to the coin.

Blanks; 1c where rimmed, I have or had both clipped blanks and planchets. The 50c has a very thin rim for its size, the smaller 20c is larger and needs to be rolled.

markn - I hope the broadstrike isn't the coin you are referring to as not being rimmed as I would disagree.
Title: RE: 4.58 gram 1984 Dollar
Post by: Fulvio on August 17, 2013, 05:44:16 PM
Quote from: 'Cobwebs' pid='25284' dateline='1376724456'Fulvio - It's an error.
Flaws occur on the die then transferred to the coin.

Meh. Semantics. Call it a Fault then, if you want to use Flaw for dies. Regardless, its not like a consistent Error as we know them.
Title: RE: 4.58 gram 1984 Dollar
Post by: markn on August 17, 2013, 06:33:13 PM
Quote from: 'Cobwebs' pid='25284' dateline='1376724456'markn - back to the inconsistent weak strike, 1st the definition.
"Weak strike - A coin exhibiting an incomplete strike (not fully formed) all over, or a partial incomplete strike of the design. Caused by insufficient pressure to push metal into all the nooks and crannies of the die, improper die spacing, or the planchet being thinner than normal."

On a weak strike the centre of the coin will be bolder than the outside

That generalisation (putting aside issues of die concavity and relief of the design being struck) might be right if we were talking simply about a press with low pressure but this is clearly a different situation.  As I have already said, this coin is clearly fully struck around the rims and in some of the design.  If the coin was thin when it was edges the formed rims could easily be high enough to cause a localised area of high striking pressure.  If you have some exposure to presses you'd understand that pressure varies across the surface of the piece being struck and pressure varies as the amount of plastic deformation increases.  And that pressure is a function of force and area.  Higher than usual rims (from the thin planchet) means more deformation at the outside of the coin and more pressure resulting in a coin that is not fully struck in other areas.  Not to mention a 4.6 gram planchet could simply not have enough metal to fill the design completely.

Quote from: 'Cobwebs' pid='25284' dateline='1376724456'The inconsistencies I am talking about are.
There appears to be a strip across the Obverse from ZA in elizabeth to ST in australia which is bold, the whole legend should be more even.
On the Reverse the middle roo has eyes this is near the rim, yet the 2nd roo behind the 1 does not, this is closer to the centre.
There appears to be a depression from the base of the 1 across to the A in dollar.
The R in dollar appears to be too bold.

Assuming that this is a regular low pressure strike which it isn't.  It's less than half the weight of a dollar coin so we're talking about a completely different set of circumstances to those shown in the 50c die pressure images shown above.

Quote from: 'Cobwebs' pid='25284' dateline='1376724456'Then there is the wire rim, to me that suggests a good or reasonably good strike. Will it have weak spots, I would say yes, but this doesn't mean it is a weak strike.
It appears to be something else that has happened to your coin.

You're inventing complexity.  It's an undersized and underweight planchet.  It was rimmed.  The high point of the planchet (the rims) were struck properly and probably provided enough resistance to trip the pressure limit on the press.  Not to mention the fact that there may simply not be enough metal to fill the high points of high relief on the die.

Quote from: 'Cobwebs' pid='25284' dateline='1376724456'A better image comparison would be another coin that is a weak strike.

No, it wouldn't.  This is completely different to a regular weak strike.  To be honest I am gob-smacked that you cannot see the similarities between this coin and the $1 on a 10c planchet.  In hand they are REMARKABLY similar.  In fact if I didn't know one weighed 1g less than the other I'd swear they were the same error.

Quote from: 'Cobwebs' pid='25284' dateline='1376724456'markn - I hope the broadstrike isn't the coin you are referring to as not being rimmed as I would disagree.

What evidence to you see of that broadstrike having been rimmed?
Title: RE: 4.58 gram 1984 Dollar
Post by: trout on August 17, 2013, 06:57:41 PM
@Cobwebs
There is absolutely NO doubt in my mind that this coin is  genuine.
The origin of the substitute planchet is the most interesting part of this discovery as far as I am concerned :ok:
Title: RE: 4.58 gram 1984 Dollar
Post by: Fulvio on August 17, 2013, 07:52:38 PM
Quote from: 'trout' pid='25313' dateline='1376731661'The origin of the substitute planchet is the most interesting part of this discovery as far as I am concerned :ok:

I'd go along with that. What IS the planchet, and was it made here for a foreign client, or were our planchets purchased from a foreign supplier who also made it for someone else?

Fascinating detective story. Can't wait to get to the last chapter. :)
Title: RE: 4.58 gram 1984 Dollar
Post by: trout on August 17, 2013, 08:49:42 PM
Quote from: 'Fulvio' pid='25319' dateline='1376734958'
Quote from: 'trout' pid='25313' dateline='1376731661'The origin of the substitute planchet is the most interesting part of this discovery as far as I am concerned :ok:

I'd go along with that. What IS the planchet, and was it made here for a foreign client, or were our planchets purchased from a foreign supplier who also made it for someone else?

Fascinating detective story. Can't wait to get to the last chapter. :)

You and me both mate, my bum is getting sore sitting on the edge of my seat waiting for a definitive answer :angel:
Title: RE: 4.58 gram 1984 Dollar
Post by: purplepennyhunter on August 18, 2013, 08:36:40 AM
I wish it were that simple. I am leaning towards the Canadian 5c as it appears to be the only copper-nickel at the closest weight. How we came to strike a dollar on a Canadian planchet is still a mystery unless they sourced blanks from Poongsan like we  possibly did for that issue.

For those on the edge of their seats about the Zambian Shilling (http://www.australian-coins.net/showthread.php?tid=666&highlight=zambia) we have struck on a security edge planchet we still haven't figured out what that planchet is either!
Title: RE: 4.58 gram 1984 Dollar
Post by: Cobwebs on August 18, 2013, 11:40:33 AM
mark n - "As I have already said, this coin is clearly fully struck around the rims and in some of the design."

This implies that the metal flow travels from the outside of the coin to the middle. The opposite to what happens.
It is the term Weak Strike that I have been talking about. The weakest part of a weak strike is its rim. The weakness in the design on your coin is more than likely due to the thin planchet. Remembering that clashed dies do occur but rarely.

The other aspect of this discussion is, I don't attribute 2 or more error terms to 1 coin unless they are obvious, ie. A brockage on a clipped planchet. I would say you have an off metal strike that is weakly struck. A rare error and I congratulate you.
Title: RE: 4.58 gram 1984 Dollar
Post by: runway on August 18, 2013, 10:47:36 PM
Good debate going on here
Cobwebs has great points I am learning on the go :)
Title: RE: 4.58 gram 1984 Dollar
Post by: Cobwebs on August 19, 2013, 09:15:29 AM
Time to end the debate with an apology to markn, after re-reading the posts markn said it was "weakly struck" it was somebody else that called it a weak strike (referring to the weakness in the design).

One thing the debate highlights, there will be differing opinions on some error coins as to "how" something has happened. In this case it is only speculation on what caused the weakness, even more so since the coin has been in circulation.

I have tried to upload an image of a 1cent blank that has been rimmed in the decimal error gallery (it also has 2 clips), the site tells me it is uploaded but I can't find it.  I try again later and start another thread - another disagreement.
Title: RE: 4.58 gram 1984 Dollar
Post by: Fordprefect on August 19, 2013, 09:24:02 AM
Quote from: 'Cobwebs' pid='25467' dateline='1376869529'I have tried to upload an image of a 1cent blank that has been rimmed in the decimal error gallery (it also has 2 clips), the site tells me it is uploaded but I can't find it.  I try again later and start another thread - another disagreement.
Admin staff (markn) need to ok uploads in the Public Gallery.
Title: RE: 4.58 gram 1984 Dollar
Post by: purplepennyhunter on August 19, 2013, 11:37:43 AM
Quote from: 'Cobwebs' pid='25467' dateline='1376869529'I have tried to upload an image of a 1cent blank that has been rimmed in the decimal error gallery (it also has 2 clips), the site tells me it is uploaded but I can't find it.  I try again later and start another thread - another disagreement.
I clicked on last uploads and found it. It's in your own album not public I think. (I am still a learner too)
Cobwebs Album (http://www.australian-coins.net/gallery/thumbnails.php?album=lastupby&uid=1119)

(http://www.australian-coins.net/gallery/albums/userpics/11119/1crimmed~0.jpg)

(http://www.australian-coins.net/gallery/albums/userpics/11119/1crimmed.jpg)
Title: RE: 4.58 gram 1984 Dollar
Post by: markn on August 19, 2013, 11:48:33 AM
(http://www.australian-coins.net/gallery/albums/userpics/11119/1crimmed~0.jpg)

That 1c has certainly been rimmed.
Title: RE: 4.58 gram 1984 Dollar
Post by: runway on August 19, 2013, 10:27:21 PM
I Like it Cobwebs :)
Title: RE: 4.58 gram 1984 Dollar
Post by: Cobwebs on August 20, 2013, 08:09:20 PM
I've always assumed that 1c coins were rimmed. Articles on this subject just say that coins are rimmed before striking. The RAM's site says "most" coins are rimmed.
The ones not rimmed are the obvious 50c and I've assumed if there are others, they maybe some of the NCLT coins. As yet I haven't read anything about specific denominations not being rimmed.
I have had 1c blanks (unrimmed) and planchets (rimmed), the raised rim is very small, from memory I would say a lot smaller than the 5c, softer metal no doubt.

As to the disagreement with the broadstrike well its not really. The only thing I would say is, going by the image there appears to be evidence of a rim on the bottom of the reverse. Not having the looked at coin it would be near impossible for me to say whether or not it was rimmed.
Title: RE: 4.58 gram 1984 Dollar
Post by: Fulvio on August 20, 2013, 08:15:13 PM
Quote from: 'Cobwebs' pid='25610' dateline='1376995160'Not having the looked at coin it would be near impossible for me to say whether or not it was rimmed.

Ian, you're most welcome to have a look at it when it gets here. My PO Box is half way to your place anyway. ;)
Title: RE: 4.58 gram 1984 Dollar
Post by: ausjack on August 20, 2013, 08:18:23 PM
any new news on the original subject yet :scratch_one-s_head:
Title: RE: 4.58 gram 1984 Dollar
Post by: Cobwebs on August 27, 2013, 03:50:28 PM
Quote from: 'Fulvio' pid='25616' dateline='1376995513'
Quote from: 'Cobwebs' pid='25610' dateline='1376995160'Not having the looked at coin it would be near impossible for me to say whether or not it was rimmed.

Ian, you're most welcome to have a look at it when it gets here. My PO Box is half way to your place anyway. ;)

When you receive it, you can give use your opinion.
Title: RE: 4.58 gram 1984 Dollar
Post by: purplepennyhunter on August 27, 2013, 06:53:46 PM
Quote from: 'ausjack' pid='25618' dateline='1376995703'any new news on the original subject yet :scratch_one-s_head:

Nope. Got the RAM annual reports for the period and met up with a big fat dead end.
Title: RE: 4.58 gram 1984 Dollar
Post by: triplewitch on August 27, 2013, 10:18:05 PM
Would the RAM identify the planchet if they authenticated it?  I see that costs 200 bucks, but you would know for sure.-John
Title: RE: 4.58 gram 1984 Dollar
Post by: purplepennyhunter on August 28, 2013, 07:58:08 AM
I don't believe the RAM do authentification anymore. Where did you read that John?

The next step should be to measure the composition with XRF I guess.
Title: RE: 4.58 gram 1984 Dollar
Post by: triplewitch on August 28, 2013, 08:09:49 AM
It's in the FAQ on the RAM website.
http://www.ramint.gov.au/faq/
Down at the bottom.
"Does the Mint authenticate coins?

The Mint offers to the public a service for authentication of Australian decimal coins that it has produced. Each item must be accompanied by a payment of A$200 (includes GST). Should you wish to have an item authenticated, it will be examined at the Mint using a variety of inspection methods. A decision concerning the coins authenticity will be given in the form of a letter but this will not include a grading of the coin. For further information please contact the Royal Australian Mint."
-John
Title: RE: 4.58 gram 1984 Dollar
Post by: markn on August 28, 2013, 08:21:53 AM
Quote from: 'triplewitch' pid='26359' dateline='1377643189'It's in the FAQ on the RAM website.
http://www.ramint.gov.au/faq/
Down at the bottom.
"Does the Mint authenticate coins?

The Mint offers to the public a service for authentication of Australian decimal coins that it has produced. Each item must be accompanied by a payment of A$200 (includes GST). Should you wish to have an item authenticated, it will be examined at the Mint using a variety of inspection methods. A decision concerning the coins authenticity will be given in the form of a letter but this will not include a grading of the coin. For further information please contact the Royal Australian Mint."
-John

That's interesting.  PPH will be rifling through my wallet shortly looking for $200 and a stamp.
Title: RE: 4.58 gram 1984 Dollar
Post by: robbiegal on August 28, 2013, 05:37:54 PM
I think that I know one person who does authenticate some coins for them or the Feds at times
But it is a bit odd, as I also thought that they stopped providing that service as well. Maybe they just do it for the decimals now and not the pre-decs
I wonder if they can also confiscate them?
Title: RE: 4.58 gram 1984 Dollar
Post by: purplepennyhunter on August 28, 2013, 06:15:52 PM
I was chatting with a coin friend and he though it may have been just in relation to forgery's and not error coins. I'm not entirely sure they wouldn't try and repossess anything :angel: I have dropped them an email asking about the process and what you get for your 200 schmachos.
Title: RE: 4.58 gram 1984 Dollar
Post by: Fulvio on August 28, 2013, 06:25:18 PM
Quote from: 'purplepennyhunter' pid='26401' dateline='1377679552'what you get for your 200 schmachos.

If you happen to be Mark, all you get is a lighter wallet. :)

I'd love to know how they come up with their pricing on stuff like that. It can't have any relationship to reality, could it? If the item is known, it should just be five minutes work to look up the records. On the other hand, of its a real head-scratcher, $200 wouldn't put a dint in any serious investigative work.

Maybe the stiff fee is just a hurdle to put people off?
Title: RE: 4.58 gram 1984 Dollar
Post by: Unicorn on August 28, 2013, 06:29:03 PM
I'm :off_topic: but I like your new avatar Robbiegal.
Title: RE: 4.58 gram 1984 Dollar
Post by: robbiegal on August 28, 2013, 07:24:04 PM
:blush:  ta
Title: RE: 4.58 gram 1984 Dollar
Post by: Goldseeker on August 28, 2013, 08:35:32 PM
That is interesting.   The RAM authenticating Decimal coins that they minted.

Several years ago, I was informed by the RAM after travelling from Melbourne to Canberra to drop the coin(s) off in person, that the RAM no longer authenticates coins due to "Public Liability" concerns.

I think I may have to send the RAM an email and have this checked out.
Title: RE: 4.58 gram 1984 Dollar
Post by: runway on August 28, 2013, 10:01:04 PM
$200 to authenticate a coin no way RAM is not interested in collectors now just a big business profit driven :)
Title: RE: 4.58 gram 1984 Dollar
Post by: triplewitch on August 29, 2013, 01:33:12 AM
No, they don't want to be swamped with trivial requests.  It's not their primary function to authenticate coins.-John
Title: RE: 4.58 gram 1984 Dollar
Post by: Goldseeker on August 29, 2013, 03:26:15 PM
When I had my three done before I was informed that they don't do it any more, it cost $120.00 per coin.
Title: RE: 4.58 gram 1984 Dollar
Post by: purplepennyhunter on August 29, 2013, 06:52:51 PM
Quote from: 'Goldseeker' pid='26485' dateline='1377755775'When I had my three done before I was informed that they don't do it any more, it cost $120.00 per coin.

What coins did you get done Goldy if you don't mind me asking?
Title: RE: 4.58 gram 1984 Dollar
Post by: robbiegal on August 29, 2013, 06:57:24 PM
Quote from: 'purplepennyhunter' pid='26514' dateline='1377768171'
Quote from: 'Goldseeker' pid='26485' dateline='1377755775'When I had my three done before I was informed that they don't do it any more, it cost $120.00 per coin.

What coins did you get done Goldy if you don't mind me asking?

they used to do the verification for the 1930 penny and the 1923 halfpenny
Title: RE: 4.58 gram 1984 Dollar
Post by: Goldseeker on August 29, 2013, 07:42:35 PM
Robbiegal has hit the nail on its head.   I had a 1930 penny, 1923 halfpenny and a 1921/22 overprint threepence done.

It was my second 1930 penny and 1923 halfpenny that they knocked me back on.
Title: RE: 4.58 gram 1984 Dollar
Post by: runway on August 29, 2013, 10:15:30 PM
Over to you RAM then I guess?
RAM has no one to authenticate I believe,would they send it to Edlins for appraisal since they are official valuers of RAM?
Title: RE: 4.58 gram 1984 Dollar
Post by: Goldseeker on August 30, 2013, 05:20:43 PM
Interesting, thanks for your comment runway.   I will send my email off to the RAM later this evening.
Title: RE: 4.58 gram 1984 Dollar
Post by: ausjack on August 30, 2013, 05:42:16 PM
any more news on the 84 dollar or still too early and no reports yet.
Title: RE: 4.58 gram 1984 Dollar
Post by: purplepennyhunter on August 30, 2013, 05:51:20 PM
AJ we've hit a brick wall. When we do have any news I'll be sure to email you personally :dance2: I'm sure there's an answer, or maybe there just isn't an answer.......
Title: RE: 4.58 gram 1984 Dollar
Post by: ausjack on August 30, 2013, 06:03:35 PM
thanks PP, yeah there's many mysteries in this great universe but hope this isn't one, good luck hunting
Title: RE: 4.58 gram 1984 Dollar
Post by: Fulvio on August 30, 2013, 07:11:25 PM
Quote from: 'ausjack' pid='26603' dateline='1377851615'...there's many mysteries in this great universe but hope this isn't one

Quantum Mechanics... that's the answer. Things can be everywhere at the same time.:angel:
Title: RE: 4.58 gram 1984 Dollar
Post by: ausjack on August 30, 2013, 07:28:10 PM
there's question that even that won't answer..where did the gas come from in the first place is one of the bigger question that I have and they don't seem to worry about the small parts like I do :scratch_one-s_head: I think there's a few thing that are what I'd call "a phenomenon" and you'll be lucky if you can ever explain, but be careful or you might go mad thinking about these things :tease:
Title: RE: 4.58 gram 1984 Dollar
Post by: Fulvio on August 30, 2013, 07:46:43 PM
Quote from: 'ausjack' pid='26613' dateline='1377856690'...what I'd call "a phenomenon" and you'll be lucky if you can ever explain...

Yeah, but... will it fit into a 2x2? :angel:
Title: RE: 4.58 gram 1984 Dollar
Post by: ausjack on August 30, 2013, 08:12:03 PM
I don't know, I'll go on to that with thinking :scratch_one-s_head:
Title: RE: 4.58 gram 1984 Dollar
Post by: robbiegal on August 31, 2013, 10:59:21 AM
Quote from: 'runway' pid='26529' dateline='1377780330'Over to you RAM then I guess?
RAM has no one to authenticate I believe,would they send it to Edlins for appraisal since they are official valuers of RAM?

there are several people who value for the RAM
I do know the person who has recently done a type of valuation for the RAM that but he is not Edlins

you have to know what they are valuing
some value the gold stocks that are dotted in banks across Australia
some value the actual RAM collection
some value a particular collection
some can comment with authority on authenticity of coins such as, the proof 1930 penny  

I do know a person who does authenticate the Australian rarities, but he doesn't work for the ram strictly speaking

authenticating a particular coin that is not a listed coin but rather an error or mule is another matter and i'm not sure of the valuers who would/could do that

it's knowing who in the business has the knowledge and the credibility for these matters  

but again, the RAM may very well deal with these decimal errors but my guess is that they would steer very clear of it,  as it is an admission of funny business going on in the minting rooms
Title: RE: 4.58 gram 1984 Dollar
Post by: triplewitch on August 31, 2013, 11:19:57 AM
I don't know about the funny business.  You're talking about someone intentionally striking the coin on a wrong planchet.  I don't know enough about the minting process to know if it could happen accidentally. I think they would want to know in any case, but surely any perpetrators in this instance would be long gone.  My concern if there has been any funny business would be that they would claim that the coin should not have left the RAM and confiscate it.  There are some coins rumored to exist in the US that have never surfaced because of this possibility.-John
Title: RE: 4.58 gram 1984 Dollar
Post by: runway on August 31, 2013, 11:02:24 PM
Nice feedback both you guys triplewitch and robbiegal :) Interesting and informative thx
Title: RE: 4.58 gram 1984 Dollar
Post by: trout on September 12, 2013, 08:47:23 AM
Any updates on this coin yet Mark ?
Title: RE: 4.58 gram 1984 Dollar
Post by: markn on September 12, 2013, 02:00:40 PM
Quote from: 'trout' pid='27937' dateline='1378941443'Any updates on this coin yet Mark ?

Nope.