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<p>[QUOTE=&quot;Oldhoopster, post: 8149131, member: 84179&quot;]To add to what [USER=27832]@-jeffB[/USER] said, the US mint made 75%copper, 25%Nickel planchets for Argentina in 1919 and 1920.&nbsp; This is the same comp as the US nickel. The specs on the 10 centavo planchet are 3.00 grams and 19.00 mm dia, so it is very close to the size of a US cent</p><p><br /></p><p>As Jeff said, a handheld XRF should be able to confirm the composition very quickly. You should also be able to determine if its plated</p><p><br /></p><p>If it&#039;s the 75Cu25Ni composition, trying to clean will likely be a disaster (think of all the nickels and clad metal detecting finds that have been posted). </p><p><br /></p><p>I wouldn&#039;t get my hopes up and the weight is slightly more than it should be (plating?), but the appearance is enough of a &quot;maybe&quot; to do an XRF, IMO[/QUOTE]</p><p><br /></p>

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