1970-S Doubled Die Obverse DDO-004

Description

Cataloged by VarietyVista as UVC-162 with Die Marker Reference DMR-005, this fourth doubled die obverse for the 1970-S Kennedy Half Dollar is confirmed as a proof issue — struck at the San Francisco Mint on specially prepared planchets using polished dies. The doubling is described as medium spread across all lettering, the date, and the hair at the top of Kennedy's head, though VarietyVista notes it can be hard to distinguish between the two hubbings because both were of similar strength — an unusual diagnostic challenge where the secondary impression nearly matches the primary in depth and definition. This equal-strength characteristic means the doubling appears more as thickening than as a clearly offset secondary image, demanding careful examination under magnification. Three die stages are tracked: Stage A at Early Die State remains unconfirmed, Stage B shows both obverse and reverse at Mid-Die State, and Stage C documents both at Late Die State — making this one of the more completely mapped die progressions. The reverse is identified as RDV-003, a specific reverse die variety that helps narrow the die marriage. The 1970-S proof Kennedy Half Dollar was struck in the 40% silver clad composition that had been standard since 1965, and proof production at San Francisco generated coins with mirror fields and frosted design elements. Doubled dies on proof coins are particularly valued because the superior surface quality of proofs makes the doubling easier to photograph and study, and the controlled production environment means each proof die typically struck fewer coins than its business-strike counterpart.

Die Markers

• UVC-162
• DMR-005
• Stage A:
• EDS (unconfirmed)
• Stage B:
• Obverse and Reverse are MDS
• Stage C:
• Obverse and Reverse are LDS

Attribution History

• Discovered by Delma K. Romines
• Expert attribution by VarietyVista

External References