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<p>[QUOTE=&quot;-jeffB, post: 6566502, member: 27832&quot;]That&#039;s what they&#039;ve done for the commemorative dollars, which also have the same dimensions and weight:</p><p><br /></p><p><a href="https://www.ngccoin.com/news/article/7251/silver-change/" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.ngccoin.com/news/article/7251/silver-change/" rel="nofollow">https://www.ngccoin.com/news/article/7251/silver-change/</a></p><p><br /></p><p>Coin silver has a density of 10.31g/cc, pure silver is 10.49g/cc. Assuming the new coins are struck to the same diameter, they&#039;ll be 1.7% thinner. That&#039;s a difference of 0.03mm. With a good micrometer, you could measure it; with your eye, you&#039;ll never spot it.</p><p><br /></p><p>And remember, the weight <i>tolerance</i> for an old-fashioned silver quarter was plus or minus <b>three</b> percent -- so the thickness differences <i>among</i> coin-silver quarters will likely swamp the thickness differences <i>between</i> .999 and coin-silver quarters.[/QUOTE]</p><p><br /></p>

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