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<p>[QUOTE=&quot;R_rabbit, post: 3474959, member: 101793&quot;]Hi<img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" /></p><p>I found your thread quite interesting.so I did a quick research on the Rockwell test.</p><p>And found this bit of interesting information...</p><p>(Such planchets are supposed to be discarded.&nbsp; If a planchet with a Rockwell test mark is struck by coinage dies, the pit is not erased.&nbsp; The pit’s originally circular outline may, however, be distorted into a slight oval as the coin expands beneath the impact of the dies.)</p><p><br /></p><p><a href="http://www.error-ref.com/?s=rockwell" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.error-ref.com/?s=rockwell" rel="nofollow">http://www.error-ref.com/?s=rockwell</a></p><p><br /></p><p>Also on cc they were talking about it on there site as well.</p><p>One person was claiming it was only done at the san Francisco mint. Not sure if that is completely accurate. If Fred says he was at west point in 73 and it was there.</p><p>Well I’d have to go with Fred.[/QUOTE]</p><p><br /></p>

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