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<p>[QUOTE=&quot;borgovan, post: 797375, member: 13016&quot;]I do realize what 1/10,000 of a part is. I have a background in analytical chemistry, including quantitative analysis, so I have a decent grasp of the concept.</p><p>&nbsp;</p><p>I never said anything about an anomaly covering 50% of the coin. I was only referring to the extremely tiny red specks that I have seen on occasion on modern gold pieces. I have no reason to believe that the tiny specks caused by copper impurities would &quot;grow&quot; to cover any significant portion of the coin&#039;s surface.[/QUOTE]</p><p><br /></p>

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