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<p>[QUOTE=&quot;medoraman, post: 2584770, member: 26302&quot;]Pure acetone cannot hard a coin as far as I know. Only the pure stuff from a hardware store though. I have seen a couple of coins damaged by an acetone soak, but those coins were artificially patinated, meaning the coin was messed with before the acetone dip, and acetone only exposed the forgery.</p><p><br /></p><p>Very useful for light cleaning of coins.[/QUOTE]</p><p><br /></p>

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