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<p>[QUOTE=&quot;GDJMSP, post: 1415089, member: 112&quot;]No, that is not what the machine does. What it does it to detect foreign substances on the surface of the coin. It does not detect if the surfaces have been altered or not.</p><p><br /></p><p>You can alter the surfaces by dipping, whizzing, by rubbing with a cloth, a brush, your fingers, almost anything.</p><p><br /></p><p>Think of it this way and it might be a little easier to understand - a coin with altered surfaces does not have original mint luster.[/QUOTE]</p><p><br /></p>

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