World Errors

[planchetflaw]

Any ideas as to why the PNG coins, when holed off-centre, don't depict a circular shaped hole?

[Nevol]

The holes are supposed to be in the centre, sometimes things went wrong. :icon_e_biggrin: Lovely errors. :winkextra:

Whoops, didn't read your post correctly.  :dontknow: why the holes aren't round. :whistle2:

[markn]

Any ideas as to why the PNG coins, when holed off-centre, don't depict a circular shaped hole?

The holes are punched before the coin is struck.  When the coins are struck part of the coin dies include a pin that sits in the hole in the blank, presumably to prevent metal flowing into the hole, thus stopping the hole from closing AND preventing fishtailing of design elements around the hole.  In the case of the off centre hole the pin hits the metal where the hole *should* be producing an area of high coining pressure.  Which off course the metal wants to flow away from.  And the easiest place to flow away is towards the hole so you end up with a hole that has a flat spot near the centre of the coin.

You can contrast this with the coin below where the hole was punched AFTER the coin was struck.  We know this for two reasons, firstly, the hole is round.  Secondly, one of the beads in the centre has actually become partially detached and is down the actual hole.  Clearly this couldn't have happened if the hole was punched before the coin was struck.

[purplepennyhunter]

Try this link. It may help, a little.
http://www.worldofcoins.eu/forum/index.php?topic=12670.0

Thanks gnome.

I quote
"Manufacture:
All general circulation coins are struck by the Royal Mint, except the 1975 K1 when the Royal Canberra Mint struck 4,000,000 and the Royal Mint 2,000,000. "

So I still don't have a definite answer!!!!

[Mister T]

I looked through my 1975 Australian Coin Reviews (I don't have November or December) and couldn't fine any more information (I think the information about the special ceremony was in the February issue?).
I don't suppose there's a mintmark or something like the Franklin Mint issues?

[purplepennyhunter]

Thanks Mister T. My ACR index says there might be relevant articles in Vol 10 no. 2 page 16, Vol 10 No. 7 page 11, Vol 11 No. 8 page 1, Vol 11 No 10 page 17.

You know the stupid thing is that yesterday I was given complete bound sets of....wait for it Volume 9 and Volume 12. I thought I had it when I was given those but checked the numbers and I need some of Volumes 10 and 11.

I think though I have established that some were minted in Canberra and some at the Royal Mint, so is there some way to differentiate the two?

[Mister T]

Is volume 10 1975? The only other reference in the 1975 issues I have mentioned that uncirculated and proof sets were expected.

I haven't seen any information about distinguishing between the two. The information I've found only mentions the 2,000,000 made by the Royal Mint.
Might need to hoard some 1975 1 kina and hope that there is a difference and it's easy to spot.

[purplepennyhunter]

Volume 10 is July 1973 to June 1974. I struggle with the dates and the volumes.

I have my ACR library sorted by date and then I went and got the ACR index (that I wish was electronic so I could just do a  ctrl-c search for keywords rather than trolling through it as it doesn't always make sense) and the ACR index is in volumes and issues not dates.

[Nevol]

These images are of the Carded or Sets of PNG coins I have and where/if the Place of minting is mentioned.
[attachment=166][attachment=167][attachment=168]

I can't get my scanner to work, so this goes with the last image:
Certificate of Authenticity
The Government of Papua New Guinea hereby certifies that this is an offi-
cial First Day of Issue Cachet containing a Proof coin and a commemorative
stamp in honour of independence.  The cachet was postmarked in Papua
New Guinea on the first day of public issue of both the coin and the stamp.
[undefined=undefined]Signature of Michael T Somare appears above this next bit[/undefined]
Honourable Michael T Somare, MHA
Chief Minister of Papua New Guinea

As you can see, it's Postmarked 16th September 1975, but the Postmark appears to be an error in itself, with the date in the middle as 10-9-75
with the correct date of independence on the bottom 16 September 1975. I can't figure that one out. :huh: :scratch_one-s_head:

[Mister T]

I think though I have established that some were minted in Canberra and some at the Royal Mint, so is there some way to differentiate the two?

Just thinking about this some more, would it be unreasonable to expect a difference?
When the decimals were first minted the London and Canberra issues were subtly different, but who decided that that would be the case?

[Nevol]

A few of my US errors:
[attachment=171]
[attachment=169]
[attachment=170]

[markn]

Malaya 1943 1c with a clip.  Our first square coin with a clip.  Possibly a double clip.

A double struck Netherlands East Indies 1c from the 19th century.  A bit manky but who can pass up a double strike for $15?

[ken65]

gday, got this the other day, am going to sell it on ebay, i imagine they are a bit more common than australian equivilant ,but what would be a fair estimate, thanks

[Australian coin]

I asked that question not long ago on CCF and the US people said $7 - $9 over there, buying in OZ they go for more
found it http://www.coincommunity.com/forum/topic.asp?TOPIC_ID=126361

[markn]

gday, got this the other day, am going to sell it on ebay, i imagine they are a bit more common than australian equivilant ,but what would be a fair estimate, thanks

Perhaps you should watch this:

http://www.ebay.com.au/itm/U-S-A-1-cent-error-coin-HUGE-50-off-centre-misstrike-MUST-SEE-Very-RARE-/150908083326?pt=AU_Coins2&hash=item2322d29c7e