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<p>[QUOTE=&quot;Jack D. Young, post: 3023515, member: 93371&quot;]Good points John; I am actually using XRF as I can. On the 1805 &quot;half cent&quot; it showed primarily copper with traces of zinc, nickel and iron- need a reference sample of a genuine period example for comparison but I have been told this combination is interesting.</p><p><br /></p><p>On an odd uniface/ half of an early large cent (appears to be half of an electro) the copper had a measureable amount of iridium in it, which I have been told is commonly found in Chinese copper ore...</p><p><br /></p><p>And there are those who speculate the counterfeiters are buying cull large cents to use as planchetts, which would possibly make XRF comparisons useless.</p><p><br /></p><p>In the case of one of the examples from this post (coin #1) the edge was imprinted properly, but the details were visibly crushed.[/QUOTE]</p><p><br /></p>

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