1970-S Doubled Die Reverse WDDR-004

Description

Occupying the fourth position in the Wexler Team's DDR catalog for the 1970-S proof Kennedy half dollar, WDDR-004 continues the pattern of multiple hub misalignment events documented across the final silver-clad proof production year at the San Francisco Mint. Cross-referenced as Wexler Variety ID 1970-S 50¢ Pr WDDR-004, this variety shares its date and mintmark with WDDR-001 through WDDR-003 and WDDR-006, collectively forming one of the densest DDR clusters in the Kennedy proof series. No die markers were recorded for either obverse or reverse, requiring attribution through direct comparison of the doubling pattern against the Wexler Team's published diagnostic images. The 2,632,810 proof sets produced in 1970 provided the raw material from which these discoveries emerged, and the proof striking process -- involving slower press speeds, higher striking pressures, and multiple impressions -- often made hub doubling more clearly defined on proof specimens than on business strikes from comparable dies. The 1970-S proof Kennedy half dollar's 40% silver-clad composition translates to approximately 0.1479 troy ounces of actual silver per coin, a precious metal content that provides a value floor beneath the variety premium and distinguishes these coins from the copper-nickel clad proofs that followed beginning in 1971. With four DDR varieties documented in the first four catalog positions for this date-mint combination, the 1970-S proof half represents one of the most productive hunting grounds for Kennedy reverse hub doubling discoveries, rewarding patient examination of proof sets from this transitional final year.

Attribution History

• Wexler Variety ID: 1970-S 50¢ Pr WDDR-004
• Expert attribution by Wexler Team

External References