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<p>[QUOTE=&quot;ValiantKnight, post: 4023035, member: 44210&quot;]I recently acquired this Ptolemy VI tetradrachm and currently am trying to figure out if it can be improved. I am mainly interested in cleaning the reverse if at all possible, but I am having a difficult time determining if the black stuff happens to be hard dirt/crud or horn silver. If its horn silver then I&#039;ll leave alone. Part of the reverse is free of encrustations so its possible the black is horn silver that the original person could not remove. But the texture looks a lot more &quot;dirt-like&quot;, I guess, which makes me think it could be dirt. I rubbed a portion of the black area with a q-tip just to be safe, but nothing came off. Thanks for any help!</p><p><br /></p><p>[ATTACH=full]1058008[/ATTACH]</p><p><br /></p><p>[ATTACH=full]1058009[/ATTACH][/QUOTE]</p><p><br /></p>

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