1952-S Repunched Mintmark RPM-001

Description

Primary repunched mintmark for the 1952-S Franklin half dollar, RPM-001 documents a triple-punched S mintmark — S over S over S — with the displaced impressions offset to the east and west. John R. Sinnock's Franklin half dollar reverse places the mintmark above the Liberty Bell beam, where the hand-punching process that applied individual mintmark letters to each working die created natural opportunities for positional variation. The triple-punch diagnostic indicates the die received at least three S mintmark impressions: the first landing at one position, the second at a displaced position to the east or west, and the third at the final accepted location, creating a composite S on the die that shows traces of all three impressions on struck coins. San Francisco produced approximately 5.53 million Franklin half dollars in 1952, a relatively modest mintage that places this date among the lower-production S-mint issues in the series. Cross-referenced as FS-501 in the Cherrypickers' Guide to Rare Die Varieties — the standard catalog number for the primary repunched mintmark variety in the Fivaz-Stanton system — RPM-001's inclusion in this authoritative reference confirms its significance within the Franklin half dollar variety census. Triple-punched mintmarks are considerably rarer than standard double-punch RPMs, as they require the engraver to have made and attempted to correct two unsatisfactory initial placements rather than the single correction that produces a typical D/D or S/S variety. The east-west displacement directions indicate the successive punches moved horizontally, creating lateral shadows of the S letter visible under magnification. Collectors should examine the S mintmark above the bell beam under 10-15x magnification, looking for two secondary S impressions flanking the primary letter, with traces visible on both the east and west sides of the accepted final position.

External References