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<p>[QUOTE=&quot;SuperDave, post: 2383666, member: 1892&quot;]Use the xylene as a soak, without a Q-tip until near the end of the (few hours&#039;) soak when you&#039;ll see if anything has been broken loose. It is sufficiently volatile that you won&#039;t need to rinse it off with water; the last step would be a &quot;rinse&quot; swish in xylene to ensure nothing has been redeposited, and let it air-dry (except it&#039;ll likely be dry before you even put the coin down). All you&#039;re looking for is to see if the xylene has any effect at all on the color; if it manages to remove even some of it we know we&#039;re on the right path. If not, we gotta think of other things. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" /></p><p><br /></p><p>Xylene and acetone have opposite polarities and work well on differing things, but this should be at least an indication of whether what&#039;s on the coin is organic or not.[/QUOTE]</p><p><br /></p>

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