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 Replies: 16 / Views: 2,447 |
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Valued Member
United States
113 Posts |
I have another crazy coin,I look at it and say could this be someone experimenting with acid or a torch .Or could this be something done at the mint maybe pressure testing or something else weird, what do you guys think?    |
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Bedrock of the Community
United States
94367 Posts |
Doubt this is a mint issue. One way or another, corrosion is eating away at the MM.
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Valued Member
 United States
113 Posts |
It does look like that something eating it away.Its strange how the d or mint mark looks almost globular and really distorted like its separating.
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Pillar of the Community
Canada
3733 Posts |
looks like corrosion to me, improper storage..
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Bedrock of the Community
United States
10635 Posts |
 Carbon spot with corrosion. Spend it and keep looking!  |
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Valued Member
United States
113 Posts |
I tried to get a better look at this mint mark and its not the greatest but this is the best I could get.  |
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Moderator
 United States
34425 Posts |
Maybe a drop of nitric acid?
"If you climb a good tree, you get a push."
-----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed."
-----King Adz
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Bedrock of the Community
United States
62064 Posts |
I agree with a carbon spot. It alters the surface, but doesn't consume the coin like an acid would do.
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Valued Member
United States
113 Posts |
That's what I was thinking nitric acid. Hard to imagine if this was a case of corrosion.
The way it looks like its beading up not having any kind of shape of a "D" .
Maybe corrosion anything is possible.
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Pillar of the Community
Canada
6244 Posts |
The acid it is the answer. Not nitric but sulfuric acid. the formation of the the carbon (how majority say) in fact it is a reaction to the sulfurs. Another thing for knowleadge: Nittric acid can dissolve the copper, the sulfuric acid just corrode and live sulfur over.
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Pillar of the Community
United States
7053 Posts |
It's a Philly cent with PMD |
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Valued Member
United States
113 Posts |
I have something interesting ,check this out I have three 1946 pennys, two with a Denver mints and third is the defect. What do you see?  |
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Bedrock of the Community
United States
62064 Posts |
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Valued Member
United States
113 Posts |
Here's the thing I noticed ,I don't think carbon spots can make, mint marks move around do you?.There's diffidently some carbon there. It also may not be a mint mark just corrosion.Also its a pretty wild coincident this spot being in the same place as a mint mark and being the same size and shape as a "D". That's all I got on this blog you probably agree.    |
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Bedrock of the Community
United States
62064 Posts |
The green on is not a carbon spot. The one with the circles outside that area are part of the carbon spot contamination. The mintmark isn't changed, the contamination makes it look like it changed, bud didn't. But it a carbon spot. I've seen enough them through the years.
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Valued Member
United States
113 Posts |
Thank you Coop you are very helpful
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Replies: 16 / Views: 2,447 |
Posted 05/27/2021 7:18 pm
