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<p>[QUOTE=&quot;Mr. Numismatist, post: 25748138, member: 142588&quot;]From your photos you can see a grey colored metal showing through the worn areas. This tells us it was plated at least once. </p><p><br /></p><p>Let&#039;s assume it is a mint made error. As you said there are three ferromagnetic metals: Nickel, Cobalt and Iron/Steel. Cobalt is immediately ruled out since it has never been used for coinage (to the best of my knowledge). Nickel is also quickly ruled out. No pattern coins were struck at the Denver mint in 1976. The Denver Mint struck 9 different coins for foreign countries in 1976. Seven of these are 75% Copper, 25% Nickel, One is Brass and the last is 55% Copper, 27% Nickel &amp; 18% Zinc. Nickel has to be around 55% pure to be ferromagnetic. Now we are left with steel. Is it possible a 1943 steel Cent was over-struck by 1976 dies? Yes. Mint employees have created unlogical &quot;error&quot; coins in the past, but your coin is copper colored. If they were trying to create an error coin then why would they plate it afterwards? But, even if this was the case, a steel cent weighs 2.70 grams. A copper plating would make it weigh more, but not .56 grams more. </p><p><br /></p><p><br /></p><p>So here&#039;s my hypothesis: </p><p><br /></p><p>Someone made a magician&#039;s coin by plating it in a ferromagnetic metal, let it cool, then afterwards plate it second time in an copper colored metal to hide the telltale silver color.[/QUOTE]</p><p><br /></p>

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