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<p>[QUOTE=&quot;Dave M, post: 2715452, member: 17469&quot;]Doing some math here... a roll of 40 uncirculated clad quarters should weigh about 226.8 grams. A roll of 39 clad and one 90% quarter should weigh 0.58 grams more. That&#039;s about 0.2% more. So if those 39 clad quarters have lost 0.2% of their weight due to wear, then that roll will weigh the same as the roll of 40 uncirc clad quarters.</p><p><br /></p><p>So I&#039;m guessing the 0.58 gram difference is going to get lost in the wear of the quarters, leaving you without a way to really tell. That is unless you found a roll with a whole bunch of silver quarters in it.[/QUOTE]</p><p><br /></p>

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