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 Replies: 18 / Views: 3,386 |
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Valued Member
 United States
180 Posts |
Since the consensus was that it was PMD, I cleaned it, just a light rinse with warm water for 30 seconds. So now, are you SURE it's not improperly annealed or other mint error?    |
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Moderator
 United States
97580 Posts |
I'm not too sure it is PMD here. There is a lot of copper showing, with some annealing issues, sometimes the copper will migrate to the surface. I think that Silvio needs a look at this one. He is a metal composition specialist here. |
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Bedrock of the Community
United States
19213 Posts |
I'm leaning toward post-strike damage, with a good dose of environmental toning/staining. Just my opinion.
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Bedrock of the Community
United States
94367 Posts |
I'm in the PMD/acidic exposure camp.
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Pillar of the Community
United States
4135 Posts |
All I know is, it looks like other nickels that has been in a fountain.
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Moderator
United States
189473 Posts |
It appears to be environmental damage, although I think it looks kinda cool. No additional value, but still a fun keeper as an example what can happen to a coin in the wild.  |
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Pillar of the Community
United States
3535 Posts |
 Enviromental. |
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Pillar of the Community
 United States
4594 Posts |
-----Burton 50+ year / Life / Emeritus ANA member (joined 12/1/1973) Life member: Numismatics International, CONECA Member: TNA, FtWCC, NETCC, EveryCountry (online) coin club Owned by three cats and a wife of 40+ years (joined 1983) Author: 3rd Edition of the Sample Slabs book, https://www.sampleslabs.info/ |
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Valued Member
United States
180 Posts |
Got it on a scale. 4.81 grams. Does this change anything?   |
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Pillar of the Community
United States
5833 Posts |
I also agree Enviromental created this nickel.
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Pillar of the Community
Canada
6244 Posts |
Thank you DEAR. The quantity of the Cu in Nickels it is to low to made such migration with out the EMF interferences to change the ionic stability.
The texture of the coin show clear acidic interferences. I think more to chlorhydric acid at low saturation. I have same results with nickels let one winter in the soil mixt with horse faecalis (very acidic).
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Moderator
United States
56855 Posts |
My vote is Enviromental damage. John1  |
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Moderator
United States
97580 Posts |
I'm not sure what Silvio said, but I like it, so I'll agree with him.
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Pillar of the Community
United States
6560 Posts |
I think Silvio said that if you bury a nickel in horse (cough)-based fertilizer over a winter, you will get a similar result.
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Pillar of the Community
Canada
6244 Posts |
@ Brandmeister
You are totally right. I made the experience because I find the Horses pup (feces) contain Nitric acid and C di-oxide. I made the test and give this result.
PS: Do the experiment outside not in your house Lab because smell and someone in the house will be not happy.
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First Page
Posted 05/25/2023 09:03 am
Uncirculated American Silver Eagles 
