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 Replies: 33 / Views: 5,870 |
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Pillar of the Community
Canada
3234 Posts |
Thanks SPP..beautifully explained and great photo work ..
I needed those pics and overlay to best understand what was taking place here..and in my case.... to better understand.
Amazing to see just how far the coin expanded in that example..
Do you have any idea of the ~amount of extra hits to get the copper to expand to that oversize..?
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Pillar of the Community
Canada
870 Posts |
Now can we pleaaaaase see the other side!
Thanks.
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Moderator
  Canada
10460 Posts |
The other side is completely normal, fully struck obverse.
"Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new search." -- J. Robert OppenheimerContent of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_USMy eBay store
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Pillar of the Community
United States
4233 Posts |
Quote:
Sorry, I'm a little lost. I'm with you. "CANADA" and part of the date are clearly visible, but the maple leaf is expanded to 2-3 times normal size? Oh well, these kinds of threads always sound like "insiders only" stuff to me. |
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Pillar of the Community
 Canada
2360 Posts |
I agree kbbpll, almost cryptic.
Edited by SilverDon
11/21/2014 04:12 am
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Moderator
Canada
10460 Posts |
What you are seeing, with the normal sized CANADA and other elements, are the product of a 'ghost' with a very thin cap on the reverse die. The cap prevented the elements from being struck, but the flow of metal produced the ghost effect. You can see this on other coins, with uniface strikes. You can either get a ghost as a normal image, from metal being propagated through a cap, or in mirror image, if the cap is thick enough (or struck through a blank planchet), with the flow of metal reflecting the anvil die. Great Britain George V pennies are well known for the flow of metal into the obverse design, creating a ghost image on the reverse, even in a normal struck coin.  The cap in this case, struck other stuff first. Normally, a cap would create a mirror brockage, but this one, has created a counter-brockage. Here is an earlier stage counter-brockage, whereby the cap is thicker, and you don't see the ghosting.  This definitely was a tougher error to figure out... "Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new search." -- J. Robert OppenheimerContent of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_USMy eBay store
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Pillar of the Community
Canada
2187 Posts |
I see. Thats pretty sweet! thanks for the info
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Pillar of the Community
Canada
1049 Posts |
SPP, I'm understanding the error and how it came to be, where I am lost is how did the details become larger than the original die size, I'm at a loss on how this can happen. Cheers and nice coin.
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Moderator
Canada
10460 Posts |
The metal stretches, and thins by multiple strikes, as a cap over the die... you see the same effect with mirror brockages...
"Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new search." -- J. Robert OppenheimerContent of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_USMy eBay store
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Pillar of the Community
Canada
2360 Posts |
Thanks for the explanation.
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Moderator
Canada
10460 Posts |
Quote:Fed_ink85: What was his conclusion?  Well, I do run the risk of my online persona being dragged through the mud again in Canadian Coin News, but heck, I cannot resist stirring the pot a little... the slip of paper inside the mylar flip, pretty much tells how misleading the initial interpretation was... needless to say, the person I bought this from, appreciated the proper identification of this error and pocketed considerably more than the "estimate".   A "full brockage error" means the entire image of one of the dies (either obverse or reverse) is struck in mirror image on one side of the coin, such as this: https://goccf.com/t/158272"Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new search." -- J. Robert OppenheimerContent of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_USMy eBay store
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Pillar of the Community
Canada
1049 Posts |
ty SPP, for explaining how that came to be, cheers.
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Pillar of the Community
Canada
3234 Posts |
I'm still quite amazed at some of these "publication errors".
They put their names to print and judging by the later fallout,..they should be unsure of some of their descriptions,..but they still proceed blindly to publish it anyway.
They know the "specific experts" on a certain piece but for some unknown to me reason, do not consult them.
The error labeling comes out in print,..many experts immediately cut them up ..and they are then shamed into a retraction... and their "so called expertize" is dragged through the mud..again..and again.
Why not do the free consult "before" printing ...and save the later aggravation..?
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Forum Kid
Canada
1074 Posts |
Hey mate, you forgot to mention my name! I identified it as being a 1980 or 1981 too remember the first reply on the forum!  |
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Pillar of the Community
Canada
3234 Posts |
Yes you did..!!,..and you were the first to do it..  |
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Replies: 33 / Views: 5,870 |
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Posted 11/19/2014 8:18 pm
