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 Replies: 19 / Views: 1,166 |
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Moderator
 United States
56855 Posts |
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Pillar of the Community
United States
2189 Posts |
Sorry but everything about this coin is just damage. It did not leave the mint looking this way. Looks like it sat in the ocean for about 50 years.
Edited by jasper62
11/04/2023 04:39 am
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Moderator
United States
54282 Posts |
I don't think it was intentionally applied acid. I think it is environmental damage, that was at some point cleaned off, leaving the pits and damage to the features.
Show your financial support of the Coin Community Family (click here)See my topic on Mexican Numismatic Medals (click here) |
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Pillar of the Community
United States
1780 Posts |
man!...that's a mess ... PMD, but how? ... here's a possible clue... ebay item number: 325872976027  |
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Pillar of the Community
United States
1780 Posts |
..." Looks like acid."... ..."Looks like it sat in the ocean for about 50 years."... I believe that either of these effects would most likely leave a high degree of verdigris coating on the coin ... ...High heat / bubbling would have most likely changed the color on the copper surface ... ...DANG...this is a tough one... don't think a good answer has been reached yet ... ...still going with PMD, but how... |
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Bedrock of the Community
United States
19164 Posts |
Exposure to a corrosive environment. I'd keep it as a fun curiosity.
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Bedrock of the Community
United States
94367 Posts |
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Pillar of the Community
United States
4135 Posts |
Contaminated by salt water, being buried, acid dip , industrial solution of sort or even household cleaner any number of things damaged this coin, it has a value of one cent.
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Pillar of the Community
United States
7512 Posts |
Quote:
I don't think it was intentionally applied acid. I think it is environmental damage, Exactly! |
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Pillar of the Community
 United States
6517 Posts |
Acid, base, or other corrosive chemical. I don't think those substances would leave verdigris—in fact, many of them are cleaners in their own right.
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Moderator
United States
96348 Posts |
agreed acid or other type of environmental corrosion.
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Pillar of the Community
 United States
1915 Posts |
I thought about that- but just don't know.
There are a few microscopic similar pits on the edge but not so much as to be worthwhile to photo and present.
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Pillar of the Community
United States
1915 Posts |
Seems odd to me:
If acid why not the whole coin?
Why the localized pin holes instead of across the whole surface?
It weighs 2.98 grams a bit low weight.
Nothing wrong with the edge that I can see.
Maybe just a bonkers coin that got into circulation?
I am documenting a small assortment of questioned coins and don't quite know what to make of this one.
So I call upon the forum for ideas and put those ideas on the printed album pages.
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Pillar of the Community
United States
7174 Posts |
Acid has eaten all of the surfaces and areas of this coin. The spots might be impurities in the copper that the acid reacted differently.
Edited by Cujohn
11/05/2023 01:44 am
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Pillar of the Community
United States
616 Posts |
Throw a penny in a crucible and lightly hit it with an acetylene torch and I bet you could make a similar example.  But extreme heat was def involved, wether it was from fire or a chemical reaction. |
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Posted 11/04/2023 04:38 am
