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<p>[QUOTE=&quot;desertgem, post: 1501889, member: 15199&quot;]I am a little confused. I assumed you were talking about the posted cents in the first post which were past 1982 when all cents should weigh 2.5 +/- .1 gram tolerance. Since these zinc core/copper clad cents were already 2.5 g, any of the chemical treatments ( listed above URL) would not increase the weight beyond tolerance, actually much less than a .1 gram. So weight for a normal 1985 copperclad zinc cent would weigh the &quot;same&quot; as a chemical zinc coated-copperclad zinc cent. The experiment shown may have used a pre -1982 cent, but it doesn&#039;t matter as the post 1982 cents have a pure copper outer layer thaat reacts better than a 95% pre-1982 &quot;copper&quot; cent.</p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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