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<p>[QUOTE=&quot;gc1111, post: 136466, member: 4142&quot;]As part of my education about coins, I have bought several cleaning solutions and experimented on pocket change. I can definitely recommend this - but only for pocket change. Some of what I have learned is that cleaning results definitely depend on the material. Copper cleans easily but does not give an &quot;original&quot; red color, and you lose that nice brown on older coins. Clad coins seems to be cleanable with pretty harsh solutions with little easily detectable ill effects. I have been surprised at how difficult it is to detect scratches from the soft brass brushes. </p><p><br /></p><p>My general advice is to use the mildest method that gives acceptable results. Start with a dipping solution. Then go to the stronger stuff if that does not work for you.&nbsp; </p><p><br /></p><p>Just please, please be very sure the coins have no numismatic value, because you are destroying the collectability of then.[/QUOTE]</p><p><br /></p>

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