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<p>[QUOTE=&quot;Ancientnoob, post: 1695802, member: 44140&quot;]The instrument would work best if the coin were homogenous. I doubt the unit can produce information about the internal structure of the coin. I am sure the technology exists. There have been great advances in NMR spectroscopy. I wonder how would you calibrate an instrument to give accurate information?[/QUOTE]</p><p><br /></p>

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