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<p>[QUOTE=&quot;desertgem, post: 641950, member: 15199&quot;]And what are these differences? are they measureable? I have only seen hearsay on this such as &quot;floating on top&quot;, continues to change color in inert holders, etc. Show me a scientific reference as to chemical&nbsp; difference a spectrometer could measure.</p><p><br /></p><p>How would you know? Again if you are dealing with amateur coin doctors, anyone could know.&nbsp; I don&#039;t know you so perhaps you are good enough to do so, congratulations, perhaps you are a PCGS grader, good! I wish you the best of luck in continuing to do so. Overconfidence can be a dangerous thing.</p><p><br /></p><p>I have no problem with coin doctors and dippers being outed, but one had better have proof beyond &quot; Because I think so&quot;. </p><p><br /></p><p>Again either love or hate toned coins, as in my humble opinion, you can only determine poorly done doctoring. It is one thing to be judgmental about things that can be proven , but quite another to be so only on subjective determination.</p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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