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<p>[QUOTE=&quot;Agilmore01, post: 2031583, member: 45687&quot;]Would like to remove any contaminants that may be on the coin making it darker. If it&#039;s just toning, it won&#039;t change any. Maybe if there are contaminants, it will knock down the contrast between the light and dark toning areas some. It might also reveal some more cleaning spots.&nbsp; Not really sure what to expect. Have been experimenting some with acetone baths to see what it will do. </p><p><br /></p><p>What varieties should I look for, or where can I find an online resource on them?[/QUOTE]</p><p><br /></p>

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