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<p>[QUOTE=&quot;BadThad, post: 8340759, member: 17261&quot;]I see some early stage, carbonate (white-film). That would easily be removed with VERDI-CARE™. Nonetheless, all conservation projects should begin with deionized or distilled water. Kentucky&#039;s &quot;hot water&quot; method works well. On low value, circulated coins, I just go directly to the tap and flush with hot, running water - light rubbing with fingers works fine.</p><p><br /></p><p>The black toning cannot be removed without the surfaces looking &quot;cleaned&quot; IMO. If it is organic based, xylene would be the best solvent choice. I personally never use acetone on coins like this unless I&#039;m intending the dehydrate the coin for storage. In my experience coins with carbonate verdigris get even uglier after dehydration with acetone.[/QUOTE]</p><p><br /></p>

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