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<p>[QUOTE=&quot;Spark1951, post: 8198432, member: 90692&quot;][USER=133514]@Newbee03[/USER] …here’s another way to look at it:&nbsp; Starting with the known mintage of 1951-D Franklin Half Dollars, 9,475,200.</p><p><br /></p><p>The mint strikes coins until the dies begin to reach the end of their useful life, arbitrarily, let’s say at 200,000 half dollars.&nbsp; 5 die pairs would be used <b>per million coins.</b><i>&nbsp; </i>Multiply that by (roughly) 9 and you end up with 45 die pairs.</p><p><br /></p><p>Each die pair is perfectly capable of having distinctive imperfections without having any doubling issues.&nbsp; Those imperfections can be tracked also.&nbsp; But no doubling has been recorded for inclusion to the databases, which means only minor varieties have been found for this date and mint mark.[/QUOTE]</p><p><br /></p>

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