Large S Mintmark, FS-501. Also a Repunched Mintmark (RPM), the subvariety not listed with a separate Cherrypickers number but mentioned in Lange's book on the series, as well as being listed by CONECA and in John Wexler's book.  I was not sure which specific RPM this was, however pretty sure it is not #3 or #4 (?). I will let the new owner decide and price it simply as a Large S.  The coin itself is a nice AU+, with the typical slightly mushy '28-S strike. Original with plenty of luster showing.  Enlarged image of the RPM/RPD from this coin, as well as a second enlarged micro image of the basic Large S variety, courtesy of NGC (please note that this is NOT the coin being offered).  0717-06