1970-S Proof Doubled Die Obverse WDDO-003

Description

Cataloged under a proof-specific title, this entry for WDDO-003 on the 1970-S Lincoln Memorial cent documents a Class III doubled die — Large Date hub over Small Date hub — emphasizing its proof coinage origin. Class III design hub doubling occurs when two different hub designs impress the same working die, superimposing elements from both. Here, a Large Date hub impression over a Small Date hub creates strong extra thickness on the date, LIBERTY, and IN GOD WE TRUST where the two designs do not perfectly overlap. The date area is most diagnostic because the Large Date and Small Date hubs differ most visibly in the 7's height and positioning — traces of both numeral profiles coexist on the finished die, producing doubling mechanistically distinct from the rotational or translational misalignments of Class I and II. No die markers were noted on either surface. Proof striking at San Francisco — polished dies and planchets, multiple impressions at elevated pressure — ensures the Class III hub-over-hub evidence is rendered with maximum fidelity, making the overlapping date profiles particularly crisp under magnification.

Die Markers

• Obverse: None noted. Reverse: None noted.

Attribution History

• Discovered by Wexler Team

External References