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2002 D cent wrong metal? missing copper layer?
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<p>[QUOTE="desertgem, post: 1992144, member: 15199"]The tolerance ( mint specs) for a copper plate/zinc cent is ( 2.5 grams +/- 0.1 grams), so such a cent could weigh from 2.4- 2.6 grams, ( but usually doesn't), also the total content of copper is 2.5% , 100% copper in the plate and 0.8% copper in the zinc core. So removing the plate would not remove the amount ( and its mass) in the zinc core. </p><p><br /></p><p>What would you use to strip the copper off , but not mess up the zinc? Zinc is twice as reactive as copper to chemicals , so once the copper was gone, the zinc image would be destroyed. I have tried to remove the plating physical when this question originally came up ( can't remember if this thread or other) to see, and even with my jewelry tools could not do so. So no, I would not consider an un-plate job over a plate job.[/QUOTE]</p><p><br /></p>
[QUOTE="desertgem, post: 1992144, member: 15199"]The tolerance ( mint specs) for a copper plate/zinc cent is ( 2.5 grams +/- 0.1 grams), so such a cent could weigh from 2.4- 2.6 grams, ( but usually doesn't), also the total content of copper is 2.5% , 100% copper in the plate and 0.8% copper in the zinc core. So removing the plate would not remove the amount ( and its mass) in the zinc core. What would you use to strip the copper off , but not mess up the zinc? Zinc is twice as reactive as copper to chemicals , so once the copper was gone, the zinc image would be destroyed. I have tried to remove the plating physical when this question originally came up ( can't remember if this thread or other) to see, and even with my jewelry tools could not do so. So no, I would not consider an un-plate job over a plate job.[/QUOTE]
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