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<p>[QUOTE=&quot;littlehugger, post: 2064792, member: 58633&quot;]My primary focus was silver. Gold is incredibly inert, and I don&#039;t remember ever seeing a dirty one. Copper is not hard to clean, but it loses its patina, and has an unnatural shine.</p><p>&nbsp;I have often seen silver coins that were in pretty good shape as regards wear, but were dirty, or black from oxidation, and thus, cheap for the grade. But personally, I want my silver coins to be ....silver!</p><p>&nbsp;when I was very young, I experimented with harsh methods, such as pencil erasers on common date cents.</p><p>&nbsp;As a metal detectorist, I am well acquainted with those methods, mainly vinegar and salt, or a rock tumbler. The coins often appear weird, and once, a bank would not accept them. I solved that by getting many rolls of coins, searching them, and returning the rest with the cleaned coins mixed in. They blended right in, no problem.</p><p>&nbsp;Never thought of acetone, although I have used it. That&#039;s why I asked here. The knowledge of experience.</p><p>&nbsp;My only previous use of acetone was after I had installed new laminate floors in my living and dining rooms. My two oldest boys got ahold of permanent markers and proceed to make museum quality drawings on about 400 square feet of floor. They didn&#039;t miss many spots.</p><p>&nbsp;I got a gallon of acetone, and thank God, it took it right off, no damage.</p><p>Because I had seen slabs marked &quot;Improper Cleaning&quot; I assumed there were proper ways that would not get a coin rejected, or a details grade. But a PCGS Coin Restoration Service? That certainly verifies my theory!</p><p>&nbsp;One other method I have heard of is boiling in soapy water.</p><p>I appreciate the info from desertgem.</p><p>Hey, is washing with soap, water and a sponge count?[/QUOTE]</p><p><br /></p>

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