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<p>[QUOTE=&quot;GDJMSP, post: 936782, member: 112&quot;]Absolutely none of them - unless you know what you are doing and have experience with it - before you do it. </p><p><br /></p><p>And even if you do know what you are doing and have the experience, there are very, very few cleaning methods that will not harm the coin. And depending on you look at it, there may only be 1 way - dipping the coin.</p><p><br /></p><p>Now you can dip the coin in distilled water, acetone, xylene or a commercial coin dip. But that&#039;s about it.</p><p><br /></p><p>Now distilled water is not going to hurt any coin. But it isn&#039;t going to remove, or clean, much either.</p><p><br /></p><p>Acetone will only remove oils and some organic substances. But it can cause some copper coins to turn weird colors. Acetone will remove nothing else.</p><p><br /></p><p>Xylene is much like the acetone.</p><p><br /></p><p>A commercial coin dip is an acid. But if used properly it will not harm the coin. But if used improperly it will destroy the coin.</p><p><br /></p><p><br /></p><p><br /></p><p>Yes it&#039;s true that acetone will remove PVC from a coin. But any damage caused that by PVC being on the coin can never be fixed. Once damaged it&#039;s damaged forever - period, end of story. All acetone can do is stop any more damage from being done.[/QUOTE]</p><p><br /></p>

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