Doubled Die Reverse WDDR-001

Description

Cross-referenced as CONECA 1-R-VIII and cataloged by the Wexler Team as 2004-P $1 Pr Lewis & Clark WDDR-001, this proof Modern Commemorative Dollar displays a doubled die reverse produced by Class VIII hub doubling — Tilted Hub Doubling in the CONECA classification system, where the working hub was angled relative to the working die during the secondary impression, creating a tilt-induced displacement pattern across the reverse design. The CONECA 1-R-VIII designation confirms this as the first-listed reverse doubled die for this issue under CONECA's systematic numbering. No significant die markers have been identified on either the obverse or reverse, which is not uncommon for proof commemorative issues where die populations are small and quality control is stringent. The 2004 Lewis and Clark Bicentennial Silver Dollar was authorized by Congress to commemorate the 200th anniversary of the Lewis and Clark Expedition (1804-1806), one of the most significant exploratory journeys in American history. The proof version was struck at the Philadelphia Mint in 90% silver composition. Modern commemorative dollars typically weigh 26.73 grams with a 38.1 mm diameter, following the traditional silver dollar specifications. The obverse, designed by Donna Weaver, depicts Meriwether Lewis and William Clark, while the reverse features their expedition's keelboat. As a proof commemorative, this coin was produced in limited quantities specifically for collectors, making the occurrence of a cataloged doubled die variety on such a controlled issue particularly noteworthy — the proof coin manufacturing process, with its polished dies and planchets, typically involves closer quality monitoring than business-strike production. The Class VIII tilted hub mechanism distinguishes this from the more common Class I through VII doubling types, as the angular relationship between hub and die creates directionally complex displacement patterns.

Die Markers

• Obverse: None significant. Reverse: None significant.

Attribution History

• Discovered by Steven Bernatowicz
• CONECA: 1-R-VIII; Wexler Variety ID: 2004-P $1 Pr Lewis & Clark WDDR-001
• Expert attribution by Wexler Team

External References