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<p>[QUOTE=&quot;GDJMSP, post: 406447, member: 112&quot;]Not really Richie. When the mint anneals a planchet they put in an oven and heat it up before the coins go to the dies to be struck. The warm metal makes them strike up easier and makes the dies last longer. </p><p><br /></p><p>What you have there is known as a sintered planchet or copper washed planchet. What happens is when they anneal all the cent planchets, some of the copper molecules come off the planchets and remain in the oven. Then sometimes when another type of planchet is inserted, all of that copper dust settles onto the nickel, dime or quarter planchet and is cooked onto it. That changes the color of the ordinarly silver colored planchet to a copper colored one.[/QUOTE]</p><p><br /></p>

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