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Copper Conservation Questio
djm
Posts: 1,565 ✭✭✭✭✭
I recently acquired some old sets of Lincoln Cents. There are a few albums where the coins have turned black. What is the best way to conserve to coins and see what they are like under all the black.
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On any rare ones leave it to the pros.
I think that those coins are lost causes. I can’t tell if the black is heavy corrosion or gunk stuck on the coin. If I were you, I’d just buy new coins.
That is beyond toning, must have been exposed to moisture for too long. Peace Roy
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That looks nasty... not sure what has caused that surface deterioration.... and likely not worth professional conservation. If just standard album coins, first try some acetone (pure)... if that does not work then just replace the bad ones.... Cheers, RickO
Get out the dremel.
Best to get any worthy coins out of paper albums.
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Those that have turned black are goners. Sorry to say.
Lance.
Since most of the opinions are they are goners then you really have nothing to lose by experimenting a little bit. Start with an acetone bath on the least valuable coin and see how it goes from there.
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