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<p>[QUOTE=&quot;Oldhoopster, post: 2772893, member: 84179&quot;]The problem is that in order to determine if the copper plating is zinc rich, you need to use some expensive analytical equipment like XRF or EDS in an SEM.&nbsp; Further complicating things is that the Xray or electron beam penetrates a little below the surface.&nbsp; Normally this wouldn&#039;t be a problem except that the copper plating is thin and there is zinc directly under the copper.&nbsp; So you would have to test a number of normal coins to see how the specific machine interacts with the zinc below the copper and come up with statistically significant baseline (no comments from any statisticians that might out there.&nbsp; You guys are basically evil anyway <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />).&nbsp; I&#039;m not sure&nbsp; what these tests cost no, but a rough guess is $100/run.</p><p><br /></p><p>Can you tell the difference by color?&nbsp; Probably, but since copper is so reactive, you probably can see similar colors on normally plated cents as well.&nbsp; I have a couple 83&#039;s that I&#039;m certain are Brass plated, but I don&#039;t expect to get a premium for them because I have no way to prove it.</p><p><br /></p><p>BTW: I think the OP&#039;s cent is gold plated.[/QUOTE]</p><p><br /></p>

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