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<p>[QUOTE=&quot;Spark1951, post: 25691197, member: 90692&quot;]Welcome to Coin Talk!</p><p><br /></p><p>The best advice I can give you is to take your time and be cautious.&nbsp; I would not use acetone on copper but I have heard xylene is safe.</p><p><br /></p><p>Any time you do large scale anything there will be casualties, so if you truly care for preserving your coins do them individually.&nbsp; Every coin can have its own special considerations.&nbsp; What it sounds like is: you have to remove oxidation and/or grit, crud, debris.&nbsp; You must be careful not to scratch the coin while you remove any debris or grit, and you must learn how to do that on an expendable coin test subject before you ruin any of the collection.</p><p><br /></p><p>Soaking in distilled water, patting dry and <b>never rub</b> the coin.&nbsp; More members will chime in with more advice.&nbsp; Good luck…Spark[/QUOTE]</p><p><br /></p>

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