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<p>[QUOTE=&quot;Anntron, post: 7859010, member: 109580&quot;]First Welcome!</p><p><br /></p><p>As a quick reply. Before ~1992 modern coins, ALL mint marks were punched into dies at the Philidelphia mint Die Room.&nbsp; Sometimes the die sinker would punch the Mint Mark in the die more than once.&nbsp; If he/she punched the die first with a &quot;D&quot; punch and then punched the die a second time with an &quot;S&quot; punch (or visa versa), then you get an over-mintmark (OMM) error. As to your specimen, without better images or data, it is too difficult to even guess.[/QUOTE]</p><p><br /></p>

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