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<p>[QUOTE=&quot;GDJMSP, post: 30700, member: 112&quot;]Personally - I would never dip any coin in acetone. But there is a large segment of the collecting community that feels it is harmless. But not with copper. Silver, gold, platinum or clad coins - yes. But never copper.</p><p><br /></p><p>Copper is weird - it reacts strangely to almost anything. It can turn all sorts of colors when it comes in contact with a substance that might not appear to hurt other coins. It can also develop a quite unappealing green patina.</p><p><br /></p><p>What would I suggest - other than distilled water, to be honest I don&#039;t know. I don&#039;t think there is anything you can safely use to dip copper other than water.</p><p><br /></p><p>But then - I don&#039;t dip or clean coins - ever. If I ever found a coin of mine that was contaminated - I&#039;d sell it or give it away.[/QUOTE]</p><p><br /></p>

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