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<p>[QUOTE=&quot;Kirkuleez, post: 1430833, member: 36864&quot;]I&#039;ll be honest, I don&#039;t know the long term effect of acetone on coins.&nbsp; But I am a chemical engineer and see no real reason why it would severely harm the coin.&nbsp; But I think that it can sometimes leave the coin with an unnatural appearance.&nbsp; To me, that is damage enough.&nbsp; I do know the long term effects of fingerprints on coins.&nbsp; I have several early proofs that have fingerprints that will continue to darken forever.&nbsp; It is too late to do anything about them, and at this point it is literally part of the coin.&nbsp; If caught early enough, acetone can be effective.&nbsp; I guess it is up to you to decide if it is worth the risk of devaluing your coins.[/QUOTE]</p><p><br /></p>

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