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 Replies: 9 / Views: 1,650 |
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Moderator
 Canada
10456 Posts |
"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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Moderator
 Canada
10456 Posts |
Just to be sure, I have solicited the opinion of a few error experts who have seen corner clips and other sample cuts made in US coin strips/blanks. I'll share what they have to say when I hear.
"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
9862 Posts |
Wow! Who'd have known the initialism PMD had another meaning. I could imagine unintentional damage to the strip or blank. But testing? Why destroy a planchet and then strike it? What are the odds it's as a result of playtime at the mint? "Dipping" is not considered cleaning...
-from PCGS website
Edited by DBM
11/19/2020 11:55 pm
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Bedrock of the Community
United States
94367 Posts |
Interesting for sure. Let us know what you find out!
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Pillar of the Community
Canada
1980 Posts |
im not an expert but having knowledge of how metals flow during a stamping precess I would agree this has the look of a genuine error,
although if I found this in a roll I would have chucked it, the thought of this being and error wouldnt even have entered my mind whis makes this an amazing find! good eye SPP!!
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Pillar of the Community
Canada
1505 Posts |
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Pillar of the Community
Canada
1081 Posts |
What is the cause of this 'Blakesley Effect'? Haven't heard of that before...
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Pillar of the Community
Canada
1980 Posts |
Quote:
What is the cause of this 'Blakesley Effect'? Haven't heard of that before.. it is caused from not having enough material to fill the die when coin is squished into the coins design picture a coin shaped piece of Plasticine but its missing a chunk of the edge now squish it between 2 coins but all the raised features are the opposite incuse (like the die would be) as you squish it it flows through the valleys of the design untill you run out of material it will then taper off and not be able to be pushed into the design |
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Moderator
Canada
10456 Posts |
Mike Diamond said this about my coin (from an error forum): Quote:
"This is a planchet flaw, but it's not pre-strike damage. This is a fissure that opened up in the coin metal strip during rolling. The facing beveled edges are characteristic of such fissures. As such, these errors should be underweight. The bevel presumably emerges as tensile stresses pull the metal apart." "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
1505 Posts |
Interesting, mine weighs in at 2.94. It looks similar, but yet different.
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Replies: 9 / Views: 1,650 |
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Posted 11/19/2020 11:49 pm
