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<p>[QUOTE=&quot;John Burgess, post: 7496828, member: 105098&quot;]I disagree. </p><p>With Morgan Dollar dies, &quot;basining&quot; which was basically die face polishing, results in a concave die face, not convex. </p><p><br /></p><p><br /></p><p><br /></p><p><a href="https://www.ngccoin.com/news/article/489/#:~:text=When%20spun%20against%20the%20face,during%20the%20coin%20striking%20process" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.ngccoin.com/news/article/489/#:~:text=When%20spun%20against%20the%20face,during%20the%20coin%20striking%20process" rel="nofollow">https://www.ngccoin.com/news/article/489/#:~:text=When spun against the face,during the coin striking process</a>.</p><p><br /></p><p>And I quote from the link by David W. Lange, &quot;The new, sculpted designs submitted by outside artists beginning in 1907 gradually rendered both radius plates and basining obsolete. The models as submitted already included the desired curvature, though the Mint&#039;s own staff sometimes had to modify this radius in the hub reduction stage.&quot; </p><p><br /></p><p>Dies haven&#039;t been flat since prior to the 1830s. the convex radius is in the design since 1907. </p><p><br /></p><p>Can&#039;t prove anything by measuring the fields of a coin, the only way to prove this is to measure die faces at different points for the die radius, the blanks move and flex during the strikes. Checking a coin with a Micrometer will tell you nothing except the thickness of the coin at various locations that are checked.[/QUOTE]</p><p><br /></p>

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