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<p>[QUOTE=&quot;mikediamond, post: 267635, member: 1859&quot;]The mintmark has been part of the master die since 1990.&nbsp; So it&#039;s theoretically possible for a doubled die to occur on the mintmark subsequent to 1989, especially before the single squeeze method was fully adopted in 1996.&nbsp; I just don&#039;t know of any examples.</p><p><br /></p><p>Annealing itself has no effect on a die&#039;s design.&nbsp; Neither does quenching or tempering of the die after hubbing is completed.&nbsp; Only hubbing creates a doubled die.[/QUOTE]</p><p><br /></p>

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