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<p>[QUOTE=&quot;my random stuff, post: 1466049, member: 35363&quot;]So I made a balance by balancing a ruler on a bottle of water that I laid on its side and taped to the table. I first balanced it by using 2 2001 pennies on each side. Then I carefully removed one side and added each of the 1982 one at a time.</p><p><br /></p><p>The results were what I got from the sound test I made earlier. Both the pennies in my first picture were indeed zinc and the other two were copper. Thanks a lot guys. Now I just need to check for small and large dates.[/QUOTE]</p><p><br /></p>

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