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<p>[QUOTE=&quot;Conder101, post: 3251963, member: 66&quot;]Actually they do, they put a very small amount of copper in it because it helps the copper plating to adhere to the zinc.</p><p><br /></p><p>The copper and zinc readings are pretty much what you would expect to see from an XRF test on a normal copper plated zinc cent.&nbsp; The Ni and Ir readingsare probably from whatever plating was used on the cent post mint.</p><p><br /></p><p>The fact that the first test showed NO Sn, and the second shows 10% Sn tells me there is something wrong with one of the tests.&nbsp; I can believe the second test if the cent was plated with tin post mint.&nbsp; That would give you the readings you are getting from the second test and the silver color.&nbsp; I&#039;m surprised that the first test didn&#039;t see any tin though.[/QUOTE]</p><p><br /></p>

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