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<p>[QUOTE=&quot;Michael K, post: 3124760, member: 78298&quot;]In 1982 they switched from copper to zinc towards the end of the year.</p><p>So in that year you have both. After that, they are all SUPPOSED to be zinc,</p><p>but several (off metal) cents have been found to be on copper planchets instead of zinc. (Most or all from Denver) 1983-D, I believe 1989-D (have to look it up) and some from the 90&#039;s.</p><p>Maybe some old copper ones were found a few years later stuck in a machine in a weird place, and they just got tossed in with the zinc blanks. Who knows.[/QUOTE]</p><p><br /></p>

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