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 Replies: 9 / Views: 1,641 |
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Pillar of the Community
United States
878 Posts |
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Pillar of the Community
 United States
8938 Posts |
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and some guns/ammo That's how. That capsule is not completely air tight, as such sulfur, and other chemicals, in the smokeless powder will seep into the air, and into the capsule and onto the coin. I kept my guns and ammo separate for that reason. |
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Pillar of the Community
United States
5672 Posts |
I agree that outgassing of sulfur from ammo can tone coins in a safe, but it's hard to imagine how that would cause that sneeze pattern on your coin, especially if you have silver coins that weren't affected. The central bullseye on those spots sure look like some tiny particles were on the surface when it was encapsulated and are reacting with the metal. .999 fine gold is also pretty inert—are you sure it's genuine? If you can remove it from the capsule, you could always try soaking in acetone in case they're not toning spots.
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Pillar of the Community
 United States
878 Posts |
Thanks for the help. I think I will take the coins out of my gun safe and store them separately, although none of the other coins were affected. It's true that the others were either in NGC holders or air-tites and all inside the coin cardboard box. None affected, only the Komsco round. I bought the round from APMEX originally at the time of release so I'm not doubting the authenticity at this point. I wonder if maybe there was a problem in the manufacturing process. It kind of confused me since the round is relatively new. |
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Pillar of the Community
United States
5672 Posts |
My guess is some specks of metallic dust got on the coin before it was encapsulated. If it were less than .999 fine, it might be some impurity in the coin itself.
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Pillar of the Community
United States
878 Posts |
Quote:
My guess is some specks of metallic dust got on the coin before it was encapsulated. If it were less than .999 fine, it might be some impurity in the coin itself.
That's what I was thinking-something in the production process. |
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Valued Member
United States
314 Posts |
Probably not from the ammo. No matter how you store them, if the coin has copper/silver contamination, you'll always get the red spots. It's been suggested online that the reason buffalos and pandas seem more prone to spots is because they are sealed in plastic right away.
Check out the thread a few posts down with the maple leaf and red/purple staining.
The lighter part of the spots disappear easily with a torch. The darker parts/spots need a bit more time (a few seconds more).
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Valued Member
United States
442 Posts |
Professional conservation of gold is usually quite successful. Especially small spotting like that. It is the most stable metal element. Silver a little less so, and copper I wouldn't even try. NCS/NGC used to have a flat fee special for conserving and grading gold. I paid $50 per coin.
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Pillar of the Community
United States
878 Posts |
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NCS/NGC used to have a flat fee special for conserving and grading gold. I paid $50 per coin. Thanks! I'll probably end up doing this! |
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Valued Member
United States
314 Posts |
That would be a reasonable if they offered some sort of warranty or guarantee to redo it if the spots came back. But if you have several it might become too $$. If you have a generic round with spots, you should try the torch.
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Replies: 9 / Views: 1,641 |
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Posted 05/18/2021 8:04 pm
