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<p>[QUOTE=&quot;ldhair, post: 4565100, member: 11540&quot;]I have used acetone on hundreds of coins and have never damaged one. I use shot glasses as well. Pick a size that fits the coin. You don&#039;t want one that lets the coin lay flat in the bottom of the glass. You want a size that will hold the coin up by the rims.</p><p>Place the coin in the glass and fill with acetone. I use an old glass flashlight lens to cover the shot glass. Put it in a safe spot, overnight.</p><p>&nbsp;</p><p>I use the lens as a gate to pour off the acetone on a cotton rag. The lens keeps the coin in the glass. Next, I let the coin slide out of the glass on a clean rag. If you picked the proper glass, only the rims of the coin can rub the glass.</p><p><br /></p><p>Now it&#039;s time for the second bath. Clean all the glass with water and dry and start all over with fresh acetone. I do this bath for an hour or two. Now it&#039;s time for a test to see what is still floating around in the acetone. Put a drop on a piece of glass or mirror and let it dry. You will see if there is a need for a third bath.</p><p><br /></p><p>I do the third bath most of the time. It can&#039;t hurt and I know that the acetone has done all it&#039;s going to do with no harm to the coin.</p><p><br /></p><p>I&#039;m not a fan of using Q-Tips or anything that rubs the surfaces of the coin. I&#039;m also not a fan of using water as a final bath. Some won&#039;t agree but I&#039;m good with that.[/QUOTE]</p><p><br /></p>

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