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<p>[QUOTE=&quot;Cloudsweeper99, post: 114170, member: 3011&quot;]When a coin is pretty far gone, it can be worth a shot to experiment on it with various &quot;home remedies.&quot;&nbsp; The WD-40 no doubt leaves a film on the coin, as pointed out, but it seemed to have decent restoration properties with no scrubbing to cause hairlines, and didn&#039;t seem to disturb the natural toning as dipping would. Other than the pre-existing surface damage, it now looks like a passable circulated coin.&nbsp; Maybe I was lucky that whatever was on the coin was something WD-40 easily removed.&nbsp; </p><p><br /></p><p>I agree 100% that this is not a recommended cleaning method, since such a thing doesn&#039;t exist,&nbsp; but I&#039;d be interested in any comments from people with a knowledge of chemistry on whether this harms the surface in any way.&nbsp; If it does, I can&#039;t detect it [not that this means much since I&#039;m not an expert].</p><p><br /></p><p>I love cleaning threads.&nbsp; They&#039;re fun and evoke passionate responses![/QUOTE]</p><p><br /></p>

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