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<p>[QUOTE=&quot;mikediamond, post: 712384, member: 1859&quot;]I&#039;ve seen a number of state quarters with no copper visible on the edge.&nbsp; All were plated outside the Mint.&nbsp; I don&#039;t know what a &quot;rub test&quot; is, and the tissue test is not reliable.&nbsp; A weight accurate to the nearest 1/10 or 1/100 gram is the first requirement in arriving at a tentative diagnosis.</p><p><br /></p><p>I can tell you that not a single silver (or even solid-alloy) state quarter has been verified as authentic.[/QUOTE]</p><p><br /></p>

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