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<p>[QUOTE=&quot;huntsman53, post: 458884, member: 1242&quot;]Eduard,</p><p><br /></p><p>Nice coin! Like borgovan, I also believe that the color is due to Copper Oxide which has more than likely permeated the dirt which is apparent on the coin. Since the Copper oxidation commonly referred to as Verdigris will continue to do damage to the coin, I believe that you need to get it into some Acetone as soon as possible. After that, a good...long soaking in a low acid Olive Oil will loosen some of the dirt as well as restore some of the underlying brown and chocolate brown color. After the soaking, you can lightly rub the surface of the coin (while it is still covered in Olive Oil) between your fingers to loosen more of the dirt, then rinse in distilled water and pat dry in a towel. I think that after the above, there will be a significant difference in the appearance of the coin!</p><p><br /></p><p><br /></p><p>Frank[/QUOTE]</p><p><br /></p>

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