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<p>[QUOTE=&quot;Barry Murphy, post: 8365288, member: 79368&quot;]I think your machine needs calibrating. I’ve xrf tested 1000’s of coins including several hundred Athenian tets and aurei. Never, and I mean never does ruthenium and indium appear, and only in minuscule amounts do cobalt, rhodium and palladium show up. The top are always gold and silver depending on the coin, then copper, lead and gold or silver (the opposite of the coin).&nbsp; Next on the list would be zinc, nickle, iron, arsenic, tin. Only then would you possibly hit rhodium, cobalt and palladium. It’s even more unusual that the same, very rare in not non-existent metals in these coins, shows up on both your tests. </p><p><br /></p><p>Barry Murphy[/QUOTE]</p><p><br /></p>

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