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<p>[QUOTE=&quot;John Burgess, post: 8135713, member: 105098&quot;]just my non-professional opinion, so take it for a grain of salt. it doesn&#039;t look like &quot;carbon spots&quot; which are contaminant flecks left on coins that cause dark toning. </p><p><br /></p><p>looks like tar or crayon flecks, or something like that, maybe a smokers cough, or a black mold or fungus even from poor storage at some point. I&#039;d give it an acetone bath, it won&#039;t impair the luster and might just remove whatever it is.[/QUOTE]</p><p><br /></p>

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