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<p>[QUOTE=&quot;johnmilton, post: 3397800, member: 101855&quot;]Cleaning has not been &quot;allowed&quot; at least with respect to maintaining or enhancing value for many years.</p><p><br /></p><p>Let&#039;s settle a definition. &quot;Cleaning&quot; is moving the metal around on the surface of the coin to make it appear better than it is. It can create false luster by polishing or what is call &quot;whizzing&quot; by creating a psudo luster with a wire brush.</p><p><br /></p><p>I do not call &quot;dipping&quot; in a mild acid &quot;cleaning,&quot; and I some will disagree with me. Dipping mostly works on silver coins, and it takes an experienced eye to decide if it will help or imporve the sitation. Some coins are so ugly with the tarnish that is on them that dipping is only way to make them marketable to some collectors. Dipping removes a very small amount of tarnished metal; it does not &quot;fix&quot; the metal that is tarnished.</p><p><br /></p><p>Gold can also be dipped, but the results are less often helpful. Gold is a &quot;noble medal.&quot; Usually it is the copper on the piece, which is on the surface, which prompts someone to mess with gold coins.</p><p><br /></p><p>Copper can also be dipped, but it&#039;s even more dicey. Most of time messing with copper and bronze coins results in a disaster in my opinion.</p><p><br /></p><p>Maybe I have confused your further, but the bottom line, collectors and others should leave their coins alone. They often do more harm that good.[/QUOTE]</p><p><br /></p>

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