1971-D Doubled Die Obverse WDDO-007

Description

Seventh doubled die obverse for the 1971 Denver Kennedy Half Dollar, WDDO-007 continues the extensive documentation of hub doubling varieties on this first-year clad issue. Attributed by the Wexler Team under Wexler Variety ID 1971-D 50-cent WDDO-007, the variety is distinguished from its adjacent catalog neighbors WDDO-006 and WDDO-008 by its specific combination of affected design elements and die-specific diagnostic features. The concentration of seven or more doubled die obverses on a single date and mint reflects both the scale of Denver's 1971 half dollar production and the dedication of Kennedy Half Dollar variety researchers who systematically examined large quantities of this readily available issue. Each die in this sequence received its own distinct hub impression error during the multi-step die manufacturing process, where a master die creates working hubs that in turn sink working dies. Misalignment at any stage of this chain can produce the doubling recorded in these catalogs. The 1971-D remains one of the most thoroughly studied Denver Kennedy dates for obverse hub anomalies.

Attribution History

• Wexler Variety ID: 1971-D 50¢ WDDO-007
• Expert attribution by Wexler Team

External References