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<p>[QUOTE=&quot;longnine009, post: 1977618, member: 1886&quot;]They used punch the mint marks</p><p>into the working dies by hand. Sometimes the </p><p>technican would not tap the mint mark punch hard enough and he would try to line up the punch again</p><p>for a second tap. But usually it might </p><p>be off just a bit so the mint mark would&nbsp; show doubling or &quot;secondary&quot; image.&nbsp; I think I see doubling&nbsp; at </p><p>the bottom of the D (or south) on your coin. I don&#039;t know what the current</p><p>resources are. James Wiles and John</p><p>Wexler have both published RPM references in past. Maybe someone</p><p>&nbsp;collecting RPMs would know of something on-line.</p><p><br /></p><p><a href="https://www.google.com/url?q=http://doubleddie.com/&amp;sa=U&amp;ei=digEVMj4JcWwggS5i4CQBA&amp;ved=0CA8QFjAC&amp;sig2=g_OpvrMfV6m6iACE77BorA&amp;usg=AFQjCNEJF50c4410MJStg0kbYmr6qh3FxQ" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.google.com/url?q=http://doubleddie.com/&amp;sa=U&amp;ei=digEVMj4JcWwggS5i4CQBA&amp;ved=0CA8QFjAC&amp;sig2=g_OpvrMfV6m6iACE77BorA&amp;usg=AFQjCNEJF50c4410MJStg0kbYmr6qh3FxQ" rel="nofollow">https://www.google.com/url?q=http://doubleddie.com/&amp;sa=U&amp;ei=digEVMj4JcWwggS5i4CQBA&amp;ved=0CA8QFjAC&amp;sig2=g_OpvrMfV6m6iACE77BorA&amp;usg=AFQjCNEJF50c4410MJStg0kbYmr6qh3FxQ</a>[/QUOTE]</p><p><br /></p>

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