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<p>[QUOTE=&quot;Hobo, post: 331313, member: 11521&quot;]I&#039;ll take a stab at it.</p><p>&nbsp;</p><p>The mintmark appears to be what I call &#039;strike doubling&#039; (aka machine doubling). I have never heard it called &#039;shelf doubling&#039;. This type of doubling leaves a shelf when the dies come together to strike the coin then lift slightly and chatter (which is probably where that term came from). </p><p>&nbsp;</p><p>The date looks to be an repunched date, not doubling. Someone will correct me if I am wrong but it is my understanding that at that time the date and mintmark were punched into each working die by hand. If the placement of the date (or mintmark) was slightly off the date (or mintmark) was punched again which sometimes left portions of the first numerals (or letters) visible. This created what we know as an RPD (<b>r</b>e<b>p</b>unched <b>d</b>ate) (or an RPM (<b>r</b>e<b>p</b>unched <b>m</b>intmark)).[/QUOTE]</p><p><br /></p>

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