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<p>[QUOTE=&quot;desertgem, post: 903161, member: 15199&quot;]The techniques and analytical equipment that are being used, have been used in art to detect differences in cloth canvases and different mixtures of pigment to detect alterations or more modern compounds. It would be relatively easy ( IMO) to detect putty, filled material of other than the same coin metal ( like putty), Frosting from chemical rather than strike, etc.&nbsp; If a coin doctor used chemicals that were not similar to natural occurring, they could probably detect that, but probably so would most experienced collectors. Thad has had more experience with these analytical processes, especially with coins, I will be interested to see his opinion.</p><p>Jim[/QUOTE]</p><p><br /></p>

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