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Do NGC or PCGS ever use XRF machines for coin authentication?
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<p>[QUOTE="Gam3rBlake, post: 7930192, member: 115909"]Oh I actually saw something on TV pretty cool about authenticating old art works.</p><p><br /></p><p>Apparently one method they use is testing the wood & paint for uranium molecules. After the first nuclear weapons tests in the 1940s there were tiny amounts of uranium all over the world so if the wood from the frame or in the paint has uranium in it they can prove without a doubt that it was made after 1945.</p><p><br /></p><p>Good luck trying to fake a Da Vinci or an Old Master painting.[/QUOTE]</p><p><br /></p>
[QUOTE="Gam3rBlake, post: 7930192, member: 115909"]Oh I actually saw something on TV pretty cool about authenticating old art works. Apparently one method they use is testing the wood & paint for uranium molecules. After the first nuclear weapons tests in the 1940s there were tiny amounts of uranium all over the world so if the wood from the frame or in the paint has uranium in it they can prove without a doubt that it was made after 1945. Good luck trying to fake a Da Vinci or an Old Master painting.[/QUOTE]
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Do NGC or PCGS ever use XRF machines for coin authentication?
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