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<p>[QUOTE=&quot;UTC, post: 930237, member: 26203&quot;]Hi,</p><p>&nbsp;</p><p>I am afraid that this topic has already been beaten to death...... But to a newbie like myself, it is a fascinating adventure. I did read some posts in CT before I became brave enough to go to Home Depot for a small can of Acetone.</p><p>&nbsp;</p><p>This week I bought this 1914 Chinese silver dollar on eBay at a very reasonable price. It is 39mm in diameter and should be .890 silver. It looked like this when I received it:</p><p>&nbsp;</p><p><img src="http://i493.photobucket.com/albums/rr297/HYTerry/Coins/BeforeAcetone01Medium.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p>&nbsp;</p><p>It looked kind of dirty to me, with all the brown and blue stains. I put the coin into distilled water for 1/2 hour and in Acetone for 3 hours. After that I took it out and let it air dry for 10 minutes.</p><p>&nbsp;</p><p>Now it looks like this:</p><p>&nbsp;</p><p><img src="http://i493.photobucket.com/albums/rr297/HYTerry/Coins/AfterAcetone01Medium.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p>&nbsp;</p><p>My questions:</p><p>1. The brown and blue &quot;stains&quot; are still there. Does it mean that both the brown and the blue are NT?</p><p>&nbsp;</p><p>2. Will keeping it in Acetone overnight possibly result in better or harmful effects on the coin?</p><p>&nbsp;</p><p>3. For this coin, should I stop right here? Or is there anything else I can do to &quot;conserve&quot; the coin better?</p><p>&nbsp;</p><p>Thanks.[/QUOTE]</p><p><br /></p>

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