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<p>[QUOTE=&quot;desertgem, post: 2753229, member: 15199&quot;]Since the quarter has a given weight besides tolerances, of 5.67 grams, and the density of Cu is 8.96 g/cm3&nbsp;&nbsp; and is&nbsp; 91.67%&nbsp; of total, and nickle ( only in the clad clad) has density of 8.90 g/cm3&nbsp; and is 8.33 % of total. Since the density is almost the same , 0.06, we can simplify the math by multiplying&nbsp; 8.33% ( .0833&nbsp;&nbsp; X&nbsp; wt. of nominal coin 5.67) and the mount of nickle = 0.47 gram/2 ( per side) = 0.237 grams per side .</p><p><br /></p><p>So a clad quarter with only <b>one clad side </b>should weigh&nbsp; 5.670- 0.237 = 5.44grams.</p><p><br /></p><p>So I do not believe it is missing one clad layer. Math somewhat rounded and we do not know the accurate weight of the original quarter within tolerances , but it is harder to think the missing clad would be that much heavier. Also the tolerances of the balance used may be way off. Getting the coin to another&nbsp; scale to validate the weight would be necessary .[/QUOTE]</p><p><br /></p>

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