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 Replies: 11 / Views: 4,759 |
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New Member
United States
19 Posts |
Came across this nickel in some change. My top guesses: The coin encountered a chemical from normal circulation. The coin was struck on a different planchet (possibly copper penny?) Grease/grime while struck. Thoughts, comments, suggestion will be appreciated. Weighs at 4.71 grams. If you need anymore pictures/contrast/sharpness differences please let me know and I will be happy to post more. Thanks!   |
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Bedrock of the Community
Australia
21788 Posts |
My guess is that it has been preferentially attacked by acid, and has left a copper enriched surface. Burial in an acid soil environment could do this to a copper nickel coin. Over the years, I have seen quite a few coppery looking copper nickel coins, and I think that they have all suffered PMD caused by chemical attack. Edited by sel_69l
02/11/2012 09:03 am
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Pillar of the Community
United States
571 Posts |
Can't be a cent planchet beacause the weight is too high. A copper cent planchet would weigh only 3.1 grams. It looks to me like exposure to some sort of acid, or possibly it has spent a long time underground. I have pulled up coins with a metal detector that have similar damage as this coin. A grease filled strike would leave smooth blank areas, not this pebbling that it has. So, I think the acid bath is the most likely explanation.
Dave
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New Member
 United States
19 Posts |
Aw shucks. Thought I had a treasure find. Oh well it's at min worth 5 pennies.  |
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Bedrock of the Community
United States
10284 Posts |
Poor 1982 ... a better date. If it had to be done, the culprit should have done that to a 2011 instead.
Edited by TNG
02/11/2012 10:16 am
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Bedrock of the Community
United States
62064 Posts |
Does it stick to a magnet? Looks like a cast coin?
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New Member
United States
19 Posts |
Coop,
Up against a neodymium there was no attraction.
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Pillar of the Community
United States
2739 Posts |
It could be acid etched, sandblasted, or shows the effects of spending too much time in a rock tumbler. No matter how you look at it, it's post-strike damage.
Error coin writer and researcher.
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Rest in Peace
United States
9104 Posts |
 , Catalyst1221! PMD, prolly acid. You might want to soak it in vinegar for a week or two. |
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Pillar of the Community
United States
1796 Posts |
With little doubt it's acid. I have a bunch of these in my PMD example collection. |
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Bedrock of the Community
Australia
21788 Posts |
Impaired proof.  |
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Rest in Peace
United States
9104 Posts |
It looks like a shell built up on the surface, which is why I suggested vinegar.
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Replies: 11 / Views: 4,759 |
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Posted 02/11/2012 08:56 am
