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<p>[QUOTE=&quot;physics-fan3.14, post: 3241155, member: 19165&quot;]Rick Snow is extremely knowledgeable - but you have to remember that, as a dealer, he also has an agenda. </p><p><br /></p><p>I&#039;ve been following this topic for a decade or so now. I remember when the first guy said that he&#039;d been treating coins to make the blue copper. I remember when PCGS stopped certifying blue copper. I remember the debate about it, and I remember when PCGS recanted and started certifying it again. I remember the threads that Rick references, where collectors did some experiments. I remember some of them being quite convincing, and some of them leaving doubt. </p><p><br /></p><p>I, however, firmly believe that the look of the IHC posted in this thread is characteristic of MS-70 treatment. Not all blue copper is treated - but this one is.[/QUOTE]</p><p><br /></p>

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