1971-S Doubled Die Obverse DDO-010

Description

On this 1971-S Proof Kennedy Half Dollar, DDO-010 exhibits medium spread on TRUST, the last digit 1 of the date, and BERTY of LIBERTY, with lighter doubling visible on IN. The obverse die variety is classified as ODV-003, with UVC-190 and DMR-012 attribution codes. Die Stage B provides the primary diagnostics: a die gouge patch appears at the upper right and lower left of the Y in LIBERTY, with both the obverse and reverse at mid-die state. San Francisco produced proof Kennedy Half Dollars exclusively during this period, as the denomination's proof coinage had been an S-mint responsibility since 1968. The medium spread on TRUST and the date's final digit offers collectors two widely separated obverse zones to confirm the attribution — the spread on BERTY and the lighter doubling on IN provide additional confirmation points closer to the rim. Proof doubled dies rank among the most visually striking varieties because mirrored proof fields create high contrast against displaced design elements, making even light doubling more apparent than on business-strike surfaces. Attributed by VarietyVista.

Die Markers

• UVC-190
• DMR-012
• Stage A:
• EDS (unconfirmed)
• Stage B:
• Die gouge patch to the upper Right and lower Left of the Y of LIBERTY – MDS
• Reverse is MDS
• Stage C:
• LDS (unconfirmed)

Attribution History

• Discovered by Chuck Wishon
• Expert attribution by VarietyVista

External References