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 Replies: 21 / Views: 2,701 |
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Pillar of the Community
 Canada
737 Posts |
Seems like maybe there`s more going on here than meets the eye so-to-speak.
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Pillar of the Community
Canada
2301 Posts |
squeeze job, the T is fattened some as well.
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Moderator
 Canada
10463 Posts |
Quote:
Seems like maybe there`s more going on here than meets the eye so-to-speak. Not a chance. Nope. Never. If you study how the coins were struck, including the rim (collar die), you will know that something like this is impossible to do at the mint. "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
737 Posts |
SPP-Ottawa - I just bought a book on Diecaps & Brockage. Interesting but not much info. Trying to find as much as I can, only finding bits n pieces here and there.
Can you recommend any books or web-links with more info of the entire process. I have a degree as a machinist that dates back 3o years & this stuff intrigues me. I`m subscribed to multiple `How`d they do that` type channels on youtube.
Edited by TaeKenDo
05/24/2019 12:40 pm
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Bedrock of the Community
United States
94367 Posts |
I agree. Some sort of vise job.
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Valued Member
United States
324 Posts |
The fact that the obverse has an extreme amount of flattening kind of overrules anything going on on the other side.
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Moderator
Canada
10463 Posts |
There are lots of books - but the main issue is that most are written for US error coins, whose mints operated (and still operate) different presses than those Canadian mints use.
"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
737 Posts |
@SPP-Ottawa - I found a post on this forum where you explain a little the process, thanks for that. I also found a few images, videos and explanations, I guess enough to get the gist of it. But I still am missing where you say knowing about the process would show this impossible. What are you looking at that I`m not perceiving, if you don`t mind briefly sharing.
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Moderator
Canada
10463 Posts |
Think of a Type 2 blank planchet, and how a rim is formed...
"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
737 Posts |
@SPP-Ottawa - Are you saying that the rims should have been affected by a proper brockage whereas on this coin, the rim is flatened ? Because from the photos I`ve seen of dies, I get the impression (no pun intended), that there is a concave shoulder that never touches the rim when the die strikes and the collar is properly in place.
Apologies for (amateurish) description - I am. ;)
Edited by TaeKenDo
05/27/2019 11:21 am
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Moderator
Canada
10463 Posts |
Why not try a search with Heritage auction archives for double struck coins of all nature and study those auction photographs... there is tremendous pressure when striking a coin, and previously struck devices which fall into the fields (highest points of the dies) for the second strike, are almost obliterated entirely...
"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
737 Posts |
I have checked many, I have seen several, maybe need to see many more. I can visualize the process, I`m having trouble bringing it all together because I`m seeing things like : coin was flipped and then restruck, etc. Is it at all possible that the Obv. was struck, then the coin flipped and the reverse was struck ? I know that doesn`t explain the other side which was flattened...maybe by the next blank ?
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Moderator
Canada
10463 Posts |
In your case, the coin was flattened by whatever it was resting on, as another coin was pressed into it - there is no collar die, and the rim was flattened equally.... (vise job). At the mint, there is either a ball cap, Rim Fin or cupping of the edges, due to the collar die. In absence of the collar die, there is no rim whatsoever... and the diameter of the coin can change, but the Type II rim can still be intact. Here are examples of coins I just had graded and certified, note how the second strike basically obliterates the devices from the first strike... there is that much pressure... only in the devices (deeper parts of the die) do you have some degree of preservation. https://www.PCGS.com/cert/37951190https://www.PCGS.com/cert/37951201 Also,full brockages are generally formed when a capped die strikes a blank... not a coin already struck (the odds of a previously struck coin, being struck by a capped die, are almost astronomical... (Zonad has the only example I know of a full brockage on a struck coin, and it is a counter-brockage). It is much more common with indent strikes (overlapping coins in the striking chamber). This is a partial brockage on a struck coin... imagine the striking pressure, and then go back and look at your coin... https://www.PCGS.com/cert/37951200 "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
737 Posts |
Yeah, I saw a few of what you describe. There is not much left to discern, I see what you`re saying. Thanks.
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Pillar of the Community
Canada
737 Posts |
@SPP Ottawa - Nice examples by the way. Thanks for the help.
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Replies: 21 / Views: 2,701 |
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Posted 05/24/2019 12:21 pm
