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<p>[QUOTE=&quot;mikediamond, post: 25744759, member: 1859&quot;]This half dollar is an in-collar double strike with a low-pressure indent on the second strike.&nbsp; Minimum die clearance during the second strike was greater than the thickness of a half dollar, which is why the area beyond the indent wasn&#039;t struck by the dies -- an &quot;invisible strike&quot; in other words.&nbsp; I&#039;m not sure what the low, short ridges on the obverse next to the indent were caused by.[/QUOTE]</p><p><br /></p>

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