1960 Proof Jefferson Nickel - Doubled Die Reverse WDDR-037

Description

Classified as Class II distorted hub doubling, this thirty-seventh documented doubled die reverse for the 1960 Jefferson Nickel proof exhibits close doubling on E PLURIBUS UNUM and UNITED STATES, attributed by Brian A. Ribar. Class II doubling occurs when the hub rotates slightly between impressions during the hubbing process, producing a rotational spread where design elements shift along an arc rather than the straight-line displacement seen in Class I hub doubling. The distinction between doubling classes is fundamental to die variety attribution, as each class reflects a different mechanical failure in the hubbing press. Key reverse die markers include a die scratch to the right of the upper portion of the small right window on Monticello and a die gouge above the second U of UNUM, both serving as fingerprint-like identifiers for this specific die. Cross-referenced as Wexler Variety ID: 1960 WDDR-037 Proof, the proof designation confirms this variety originated on proof dies at the San Francisco Mint — although 1960 proofs were still being produced at Philadelphia, as San Francisco did not resume proof production until 1968. The thirty-seven documented doubled die reverses for the 1960 proof Jefferson Nickel reflect the exceptional scrutiny this date has received from variety researchers. Proof coins receive multiple strikes on polished planchets, and the controlled production environment makes subtle doubling more detectable against the mirror-like fields than on business strikes.

Cross References

• Wexler Variety ID: 1960 WDDR-037 Proof

External References