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<p>[QUOTE=&quot;Conder101, post: 2573582, member: 66&quot;]Copper plated zinc are 2.5 grams.&nbsp; A gold color can come from the plating solution being used to long and becoming contaminated with excess zinc.&nbsp; As the zinc concentration rises the plating has more and more zinc in it and takes on a yellow brass color.&nbsp; I don&#039;t consider these off color cents to be errors because EVERY cent will have a slightly different amount of zinc in the plating.&nbsp; At what point do you decide &quot;This is too much zinc so these are errors.&quot;?&nbsp; You would have to have an XRF gun to tell what the exact composition of the plating is (can&#039;t accurately measure it by eye.)[/QUOTE]</p><p><br /></p>

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