The double struck part is so far out of the plane of the coin I couldn't get it to focus on the whole coin.
(http://www.mycoinalog.com/wp-content/uploads/2016/04/australia-1981-20c-double-strike.jpg)
we really do need a 'like' button !!!
Nice one Mark :good:
How cool is that!!!
What do you think went on with the straight line on the right of the obverse? Some sort of ejection issue perhaps?
wow, very nice coin Mark :good:
Quote from: 'Unicorn' pid='86673' dateline='1459851781'How cool is that!!!
What do you think went on with the straight line on the right of the obverse? Some sort of ejection issue perhaps?
I would hazard a guess that the coin was forced under part of the press when the second strike occurred .
Nice :)
Quote from: 'Unicorn' pid='86673' dateline='1459851781'How cool is that!!!
What do you think went on with the straight line on the right of the obverse? Some sort of ejection issue perhaps?
Either damaged getting jammed under some part of the press, perhaps a feeder finger? Or caused by a machine operator chiselling the coin out of the press.
It's really interesting how the reverse bulge appears void of design whilst the obverse bulge is very clearly struck. Maybe a blank planchet in the press under the reverse?
Such an interesting error, it's like a murder mystery.
Quote from: 'Unicorn' pid='86684' dateline='1459853841'It's really interesting how the reverse bulge appears void of design whilst the obverse bulge is very clearly struck. Maybe a blank planchet in the press under the reverse?
Such an interesting error, it's like a murder mystery.
Yes almost certainly struck against a blank. Somewhere out there is a matching indent error with a partial blockage in the indent.
Quote from: 'markn' pid='86679' dateline='1459852466'Or caused by a machine operator chiselling the coin out of the press.
At that point the operator would normally put it in some kind of reject bin for recycling?
Quote from: 'r9453' pid='86707' dateline='1459889889'Quote from: 'markn' pid='86679' dateline='1459852466'Or caused by a machine operator chiselling the coin out of the press.
At that point the operator would normally put it in some kind of reject bin for recycling?
You'd think that but 1981 was a very different time to now.
Quote from: 'markn' pid='86709' dateline='1459894020'You'd think that but 1981 was a very different time to now.
Now is certainly a different time to 8080s, CP/M and S-100 Buses!
3 Different mints in play as well wasn't there
Quote from: 'gnome' pid='86729' dateline='1459909498'3 Different mints in play as well wasn't there
Good point, many millions minted at each and a lot of operators.
To help you get your head around how this error happened here are some images of another error coin, a pair of errors that sold on eBay about 3 years ago. Sellers images and I didn't buy the coins, they did sell for $4,000 for the pair. Pictures borrowed from eBay.
The 20c is the (same as the) double struck half of this pair. Wow it would be cool to find its mate!
Ian McConnelly calls these errors saddle strikes. Technically I don't know if that's correct, I have heard them called a mated pair but we don't have the pair. The 20c is double struck against a blank and the other error this jam created is an indent with a brockage.
Note: there is also damage to the double struck half of this pair.
(http://www.australian-coins.net/gallery/albums/userpics/10002/1969-10c-error-pair.jpg)
wow
thanks PP
1969 as well
definitely from the depths of the vault
Indeed a fascinating set of images that explains very well how the OP coin was struck (whatever you call it).
Very very nice :drooling:
Pedro
Yes those coins would be an awesome find IF you could find them. I'm lucky to find anything good, I'm just not lucky :(
One for Uni :mocking:
https://www.youtube.com/watch?v=W3tl9xM1_wM
:laugh2: On ya AJ ..... I was going to give you Judy Garland but thought you'd like this one more ...... https://www.youtube.com/watch?v=6DbAEO4Chbo (https://www.youtube.com/watch?v=6DbAEO4Chbo)
:blink: that is just so wrong in so many ways :laugh2:
I found these images online (Facebook), to me it looks similar to the OP coin except only one strike and made in 2005.
(http://www.australian-coins.net/gallery/albums/userpics/11093/2005_20c_Error.jpg)