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<p>[QUOTE=&quot;lkeigwin, post: 1197406, member: 30400&quot;]Good stuff, conpewter.</p><p><br /></p><p>Interesting...I just checked PCGS Coinfacts and they have a different weight for the 1992-S and later 90% silver proof: 11.30 g. Same as &#039;71 and later clad. Which is why I said the OP&#039;s coin -- silver or clad, couldn&#039;t be sorted out by weighing it.</p><p><br /></p><p>But this doesn&#039;t sound right. The 1964 halves weight 12.5 g. Franklins weigh 12.5g. Shouldn&#039;t the later year 90% silver proofs be the same?</p><p><br /></p><p>Maybe PCGS got it wrong. Or maybe the modern silver proofs are just a wee bit thinner?</p><p><br /></p><p>I don&#039;t know what the tolerance is for half dollar planchet weight. Probably close to half a gram.</p><p>Lance.[/QUOTE]</p><p><br /></p>

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