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<p>[QUOTE=&quot;bugo, post: 1957023, member: 53226&quot;]I&#039;ve found pennies that appeared to be zinc but when I flipped them over they were 1981 or older.&nbsp; All of them I&#039;ve found have been late &#039;70s or early &#039;80s.&nbsp; I&#039;ve never seen a penny from before 1976 or so that looks like these did.&nbsp; Is it possible that a few zinc pennies were let into circulation to test the composition before switching over?&nbsp; Or is it possible that some test coins were accidentally leaked into circulation?[/QUOTE]</p><p><br /></p>

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