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<p>[QUOTE=&quot;Michael K, post: 4432033, member: 78298&quot;]All nickels are 5.</p><p>Copper pennies are 3.1 and zinc are 2.5.</p><p>So, if those all weigh correctly and your 1983 is still 3.1 you might have something.</p><p>Of course there are always other explanations, besides an inaccurate scale before you have a winner. Maybe the date took a hit and it&#039;s not 1983 and you made a mistake. Maybe it&#039;s just a thicker rolled planchet, so it&#039;s heavier, and not copper.</p><p>I am thinking the scale is incorrect. But, pictures are worth 1000 words, etc.</p><p>What kind of scale is it? A small digital scale is preferred to some postal scale that works with springs.</p><p>Use the scale on a flat surface. Weigh the coin at different points (after you have determined it is calibrated correctly) in the center, take it off and on several times.</p><p>Weigh it in all 4 corners. You will get slightly different readings.</p><p>Clear photos of the coin, and the coin on the scale.[/QUOTE]</p><p><br /></p>

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