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<p>[QUOTE=&quot;GDJMSP, post: 2500169, member: 112&quot;]This is what PCGS said when the sniffer was announced - the bold font is my doing.</p><p><br /></p><p><i><br /></i></p><p><i>&quot;......Implementation of the PCGS Coin Sniffer for <b>inorganic materials</b> is planned for early 2011,&quot; he told attendees at the PCGS Set RegistrySM awards luncheon at the American Numismatic Association World&#039;s Fair of Money in Boston on August 13, 2010.</i></p><p><i><br /></i></p><p><i>The PCGS Coin Sniffer uses dispersive X-ray spectrometry (EDX), Fournier Transform Infra-Red Spectral analysis (FT-IR), Raman Spectroscopy and other analytical techniques to detect the kinds of materials applied by so-called &quot;coin doctors&quot;&nbsp; ........&quot;</i></p><p><i><br /></i></p><p><i>&quot;Willis explained that some coin doctors use metals to build up certain areas on a coin&#039;s surface, for example, attempting to create a full head on a Standing Liberty quarter, full split bands on a Winged Liberty/Mercury dime or improving diagnostic high areas. Metallic solutions such as solder, indium, Clorox®, iodine and potassium or potash have been applied to alter a coin&#039;s surface.</i></p><p><i><br /></i></p><p><i>Beginning next year, the PCGS Coin Sniffer will use EDX technology to analyze elements of coins on the atomic level. The FT-IR technology that will be implemented this fall analyzes coins on the molecular level. In the EDX process, a high-energy beam of electrons is focused on a coin&#039;s surface. Resultant dispersed energy is measured and the atomic structure is determined.</i></p><p><i><br /></i></p><p><i>&quot;It&#039;s similar to scanning with an electron microscope,&quot; said Willis. &quot;Foreign metals as well as metal fatigue due to high heat from a blow torch or laser can be detected.&quot; ...........&quot;</i></p><p><i><br /></i></p><p>You can read it all here - <a href="http://www.pcgs.com/News/Pcgs-Coin-Sniffertrade-Uses-Advanced-Technology-To-Detect-Doctored-Coins" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.pcgs.com/News/Pcgs-Coin-Sniffertrade-Uses-Advanced-Technology-To-Detect-Doctored-Coins" rel="nofollow">http://www.pcgs.com/News/Pcgs-Coin-Sniffertrade-Uses-Advanced-Technology-To-Detect-Doctored-Coins</a></p><p><br /></p><p><br /></p><p>So yes, according to them at least, the sniffer can detect metals that have added to the coin.[/QUOTE]</p><p><br /></p>

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