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<p>[QUOTE=&quot;Mr3dPHD, post: 603605, member: 18909&quot;]I know this thread has been buried, but there is a much easier way to tell then by visual inspection or weight.&nbsp; If you take a copper penny and bounce it on its side it will resonate with a nice long ring.&nbsp; A zinc penny does not resonate, and the resulting sound is a quick &quot;tink&quot;.&nbsp; Just try bouncing any pre &#039;82 penny on a hard surface, and then do the same with a post &#039;82 penny.&nbsp; Now take your &#039;82 pennies and match the sounds.[/QUOTE]</p><p><br /></p>

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