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<p>[QUOTE=&quot;BAJJERFAN, post: 2130690, member: 74330&quot;]There are techniques to analyze the spot on a coin without scraping it off. ESCA/XPS is one that comes to mind. I think the white spots have been pretty much established to be Silver Chloride. Does anyone have any analytical results to suggest that the spots are other than AgCl?[/QUOTE]</p><p><br /></p>

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