Discussion in 'US Coins Forum' started by JakeSol007, Aug 9, 2012.
Has anyone used this and if so what do you make of it? And do coin shops use this?
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First hand experience?
Yes. Depending upon the contaminents on the coin (i,e, grease, finger grease, etc.) copper coins can turn anywhere from blue to violet.
If I was going to clean a silver coin, it would be with ms70 cleaner.
MS70 turning copper blue is well known and has been discussed on various message boards for several years.
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