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<p>[QUOTE=&quot;desertgem, post: 2107488, member: 15199&quot;]I share Stldanceartists comments above, but certainly don&#039;t wish to squish experimentation. Go to a bank for a roll or collect some BU 2015 cents and try your procedure, then put aside for a year or two to allow for chemical reactions.</p><p><br /></p><p><br /></p><p><br /></p><p>The &#039;classic&#039; labeled soap contained salt and silicates, because whether they say so or not, soap without even mild abrasive doesn&#039;t work well. Also the pH was about 8.5 so it wasn&#039;t neutral either. The new Ivory products contain organic fatty acids, and similar acids are found in many oily agents used to clean coins in the past, but changed the color over time ( that is why I mentioned setting them aside for a period of time. Many don&#039;t realize that plant fibers such as cotton , plant parts such as thorns and most plastic bristles, often have a hardness greater than that of copper, silver and gold. Lighter brushing would produce lighter marks, so you would have to experiment. They are your coins , and you seem to understand the problems, so please use common recent coins, in case damage does occur in your experiments.[/QUOTE]</p><p><br /></p>

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