CU-10c-1959D-01 Cud

Description

Carrying the dual cross-reference designations RDC-59D-1 in the Roosevelt Dime Cud registry and CU-10c-1959D-01 in the Cuds on Coins catalog, this cud error on the 1959-D Roosevelt Dime documents a significant die break where a fragment of the die separated at the rim, producing the characteristic raised, featureless lump of displaced metal on struck specimens. Cuds form through progressive die fatigue — repeated high-pressure strikes cause stress fractures that propagate from the rim inward until a wedge-shaped or irregular section of die steel breaks free, leaving a corresponding void in the die that fills with planchet metal on every subsequent strike. The 1959-D Roosevelt Dime occupies a transitional position in the series, being the final year of the silver composition (90% silver, 10% copper at 2.50 grams) before the Coinage Act of 1965 mandated the switch to copper-nickel clad planchets beginning with the 1965 issue. The Denver Mint produced approximately 164.9 million dimes in 1959, a production volume that required numerous die pairs and created ample opportunity for die failures of this type. As the first cataloged cud for the 1959-D date (indicated by the "01" suffix), this variety establishes the baseline entry in the cud census for this particular date-mintmark combination. John R. Sinnock's Roosevelt obverse portrait and torch-olive-oak reverse design provide the design context within which the cud's position can be described and located. Collectors should examine the rim area carefully under magnification, looking for the unmistakable raised blob where design detail gives way to a smooth, featureless plateau of metal pushed up from the planchet surface.

Attribution History

• Discovered by Fred Weinberg
• Cross reference number: RDC-59D-1 Cross reference number: none.
• Expert attribution by Cuds on Coins

External References