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<p>[QUOTE=&quot;SuperDave, post: 2309448, member: 1892&quot;]Nice pics. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" /></p><p><br /></p><p>You have to be realistic when evaluating the chances of the coin being one thing or another. We know science-class (and idle-hands) plating to be a very common thing, to the extent that 999 of 1000 of these are from that cause. I haven&#039;t heard the zinc test strike idea before, but it&#039;s plausible, zinc being easy to strike and cheap. An off planchet is certainly in play, as well.</p><p><br /></p><p>A weight accurate to 0.01g would tell the difference between copper and zinc, but any sort of plating wouldn&#039;t change the weight enough to matter. At that point, the only possible additional data would probably require XRF analysis, and then somebody with a reputation would have to make a decision. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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