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<p>[QUOTE=&quot;desertgem, post: 2785833, member: 15199&quot;]Well, lets up the sophistication and spend close to a million to get a combo that can really tell a silver or gold coin from an imitation. First we need a fault indicator such as these </p><p><a href="https://www.olympus-ims.com/en/applications/ut-testing-gold-bars/" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.olympus-ims.com/en/applications/ut-testing-gold-bars/" rel="nofollow">https://www.olympus-ims.com/en/applications/ut-testing-gold-bars/</a></p><p>Either procedure 1 or 2</p><p>using ultrasound to find faults/flaws ( inconsistencies ) in&nbsp; layers of the coin to be sure it is the same continuous ( non-clad metal)&nbsp; and then use a XRF device ( same company) to analyze it if it passes the first part to see if its really gold or silver, as different proportions of metals ( such as gold karat level or silver % ). </p><p><br /></p><p>I think a charge of $ 20-50,000 /coin should be acceptable so we can all rest securely at night. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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