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<p>[QUOTE=&quot;GDJMSP, post: 4067610, member: 112&quot;]It takes experience to know what is on coins. Green stuff ? PVC residue can be green but isn&#039;t always green, verdigris is green, even some toning is green, and there are who knows how many other things that could be green. The proper way to clean coins is described in the thread I linked above above. And what I described in that thread are the only things you should do.</p><p><br /></p><p>When you have questions about to do to a coin, post pictures of the coin and ask what to do ! But the answers are almost always going to be to follow the direction in that thread. About the only time the answer is going to be different is when you have verdigris on a coin. To remove verdigris you should use a product called Verdi-Care, and follow the directions that come with it.</p><p><br /></p><p><br /></p><p><br /></p><p>Yes xylene is very combustible, yes you should put it in a metal container with a lid that can be sealed, and take it back to a hardware or paint store. Small amounts of xylene will also evaporate like acetone does and just as quickly but it&#039;s not as harmless as acetone is so you don&#039;t really want to just pour it out on the driveway.[/QUOTE]</p><p><br /></p>

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