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<p>[QUOTE=&quot;desertgem, post: 1154935, member: 15199&quot;]Well they are your coins and I see no reason you can&#039;t do what you wish with them. IMO.</p><p><br /></p><p>the reason that oils are so often frowned upon for coins , especially higher grades, is that if the oil remains on the surface, and it usually will , without using strong chemicals to remove it, is that oils generally are organic based and as time goes by, breakdown and release organic acids. Several of these products can be sulfur containing also in composition. Some synthetic clock oils claim not to have this occur, but most of them are proprietary and composition unknown. The use of oil on ancient and detected coins is often done, but many of those coins have pre-existing problems.</p><p><br /></p><p>It most likely will have no visible effects on your grade coins, but someone should not apply it to a high grade coin, especially copper, IMO.</p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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