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1955-S Variety WMDO-001

Error
1955 (S) Dime Master Die Doubling Obverse error coin
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Attribution

W

Verified by

Wexler Team

Market Value
N/A
Rarity Index
N/A
Discovery Date
1955
Last Sold
N/A

Description

San Francisco's manifestation of the 1955 doubled master die, WMDO-001 for the 1955-S Roosevelt Dime carries the identical counterclockwise spread from a pivot at approximately 3:00 visible on LIBERTY, IN GOD WE TRUST, and Roosevelt's lips — because the doubling originated on the master die itself, not on any individual working die. Every 1955-S Roosevelt Dime in existence carries this master die doubling, making it universal across the entire mintage. The distinction between master die doubling and working die doubling is fundamental: working die varieties are unique to a single die pair, while master die varieties propagate to all dies created from the affected master. San Francisco struck approximately 18.5 million dimes in 1955, and every one shows this doubling to varying degrees depending on working hub state, working die state, and subsequent coin wear. Cross-referenced as CONECA: MD-1-O-V and Wexler Variety ID: 1955-S 10¢ WMDO-001, die markers for obverse and reverse will vary on each working die since the master die doubling is the constant, not the individual die characteristics. Attributed by the Wexler Team, this variety is valuable primarily as an educational example of how master die anomalies differ from the more commonly collected working die varieties.

Attribution History

  • Discovered by Brian Ribar Cross References: CONECA: MD-1-O-V Comments: Because this is a doubled master die, all working dies for the 1955 P,D,S, and proof Roosevelt dimes had this doubling. Consequently, all 1955 dated Roosevelt dimes have this doubling making it interesting, but worthless. How well the doubling is seen will vary depending on working hub state, working die state, and coin wear.
  • CONECA: MD-1-O-V Comments: Because this is a doubled master die, all working dies for the 1955 P,D,S, and proof Roosevelt dimes had this doubling. Consequently, all 1955 dated Roosevelt dimes have this doubling making it interesting, but worthless. How well the doubling is seen will vary depending on working hub state, working die state, and coin wear.; Wexler Variety ID: 1955-S 10¢ WMDO-001
  • Expert attribution by Wexler Team

External References

Last updated: August 8, 2026

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