1970-D Doubled Die Obverse WDDO-006

Description

Cross-referenced as CONECA: 4-O-V and formally designated 1970-D 1¢ WDDO-006 in the Wexler system, this doubled die obverse on the 1970-D Lincoln Memorial cent carries attribution from two of the hobby's most respected error-variety organizations. The CONECA designation "4-O-V" follows that organization's systematic numbering convention: the 4 indicates the die class (Class IV, offset hub doubling), the O specifies obverse, and the V is the sequential variety letter within that class for this date. Class IV doubled dies result from a tilted hub during one of the multiple impressions needed to fully sink the design, producing spread that varies in width across the die face — typically stronger at one edge and fading toward the opposite side. This geometric characteristic distinguishes Class IV from the more common Class I (rotated) and Class III (design hub doubling) mechanisms, and experienced attributors can often identify the class from the directionality of spread across multiple reference points. The dual Wexler-CONECA attribution provides collectors with independent verification pathways — if a candidate coin's doubling matches WDDO-006's documented characteristics, the CONECA: 4-O-V listing offers confirmation through a separate organization's analysis. The 1970-D cent's abundance of doubled die varieties across multiple classes makes it an excellent study date for collectors learning to distinguish between doubling mechanisms, and WDDO-006's Class IV classification adds diversity to the range of hubbing errors represented in the 1970-D series.

Attribution History

• Discovered by Frank Baumann Cross References: CONECA: 4-O-V
• CONECA: 4-O-V; Wexler Variety ID: 1970-D 1¢ WDDO-006
• Expert attribution by Wexler Team

External References