2007-S Doubled Die Reverse WDDR-001

Description

A proof-only doubled die reverse variety on the 2007-S Wyoming State Quarter, WDDR-001 carries dual cross-references: CONECA classification 3-R-VIII and Wexler Variety ID: 2007-S 25¢ Pr WY WDDR-001. The CONECA Class VIII designation indicates a tilted hub doubling mechanism, where the master hub tilted along one axis during the secondary impression, producing spread that varies in magnitude across the die face — stronger at points farther from the tilt axis and diminishing toward it. As a proof issue from San Francisco, the 2007-S Wyoming quarter was struck on specially prepared polished planchets with mirror-finish dies, conditions that make even subtle hub doubling more readily visible against the reflective proof surfaces than it would be on business-strike satin or frosty finishes. The Wyoming State Quarter reverse, featuring the famous Bucking Horse and Rider design, provides distinctive design elements against which the tilted hub doubling can be measured. State Quarter proof sets from 2007 were produced in substantial quantities — both clad and silver versions — ensuring a meaningful population base for this variety. As WDDR-001, this is the first (and possibly the primary) documented doubled die reverse for the proof Wyoming quarter, likely representing the strongest doubling identified on this issue. The combination of proof surface quality, State Quarter collector interest, and dual CONECA/Wexler attribution makes this variety particularly appealing to modern-era variety specialists.

Attribution History

• Discovered by Al Lawrence Cross References: CONECA: 3-R-VIII
• CONECA: 3-R-VIII; Wexler Variety ID: 2007-S 25¢ Pr WY WDDR-001
• Expert attribution by Wexler Team

External References