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<p>[QUOTE=&quot;expat, post: 4564357, member: 111067&quot;]<a href="https://www.cointalk.com/goto/post?id=4563977#post-4563977" class="internalLink ProxyLink" data-proxy-href="https://www.cointalk.com/goto/post?id=4563977#post-4563977">↑</a></p><p>I totally agree with nuMRmatist. Not a good idea.</p><p>Not a bad idea either.</p><p><br /></p><p><a href="https://www.cointalk.com/goto/post?id=4563923#post-4563923" class="internalLink ProxyLink" data-proxy-href="https://www.cointalk.com/goto/post?id=4563923#post-4563923">↑</a></p><p>FIRST rule is never clean a coin.</p><p><br /></p><p>That said, I think soap / water / QUALITY model paintbrush (or perhaps other mild chems) would never be detected by pro grader (had LOTS of Chem in college atoo <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie2" alt=";)" unselectable="on" unselectable="on" /> )</p><p><br /></p><p><b>Acetone ? That&#039;s a STRONG chemical (no pH, chemically speaking)</b> - and PROBABLY wouldn&#039;t be detected.</p><p><br /></p><p>But again, ... see rule #1 .............................................</p><p>Soap and water COULD leave some residue which COULD turn really cruddy with age,<b> whereas acetone (which is not a strong chemical...whatever that means)</b> <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie46" alt=":facepalm:" unselectable="on" unselectable="on" />will do no harm. Biggest caveat...don&#039;t rub.</p><p><br /></p><p>For someone still relatively new to the hobby could someone please clarify the above two opinions as to which is correct. I have a number of coins which are not key dates etc. but i would love to see more of their details[/QUOTE]</p><p><br /></p>

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