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<p>[QUOTE=&quot;Hobo, post: 462993, member: 11521&quot;]RPD is the acronym for a <b>R</b>e<b>P</b>unched <b>D</b>ate. An RPD is created when one or more numerals of the date is punched into the die more than once. Sometimes the same punches were used but the repunched numerals were slightly misaligned from the original numerals. Other times different numerals were used (as in the case of an overdate - a die that was punched with the date 1882 was repunched with a 3 over the 2). </p><p>&nbsp;</p><p>Mechanical doubling is an entirely different animal and occurs when the hammer die chatters after striking a coin. </p><p>&nbsp;</p><p>So, an RPM is created during the die-making process and mechanical doubling occurs during the striking process.[/QUOTE]</p><p><br /></p>

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