CU-100c-1979P-07 Rim Cud

Description

Documented by Cuds on Coins as the seventh cataloged rim cud for the 1979-P Susan B. Anthony Dollar, CU-100c-1979P-07 represents a major die break where a section of the die rim fractured and fell away, leaving a void that filled with metal during striking to produce a raised, featureless blob extending from the coin's edge inward into the adjacent design area. Rim cuds are among the most visually dramatic die errors in U.S. numismatics — unlike hairline die cracks or subtle hub-doubling varieties, a cud is immediately apparent to the unaided eye as an irregular lump of metal disrupting the coin's normal circular profile. The mechanism of cud formation involves catastrophic fatigue failure in the die steel, where accumulated stress from hundreds of thousands of strikes causes a crack to propagate from the rim inward until a wedge-shaped fragment breaks free entirely, and all subsequent strikes from that damaged die produce coins with the characteristic raised blob in the area where die metal is missing. No cross-references to other cataloging systems have been established for this variety. The Susan B. Anthony Dollar series, produced from 1979 to 1981 and again in 1999, was struck on small-diameter (26.5mm) copper-nickel clad planchets that were frequently confused with quarters due to their similar size and color — a design shortcoming that limited the series' acceptance in commerce. The 1979-P had a substantial first-year mintage as the Mint pushed production of the new denomination, and the high-volume striking likely contributed to accelerated die fatigue that manifested as rim breaks like this CU-100c-1979P-07 specimen. Frank Gasparro's obverse portrait of suffragist Susan B. Anthony and Dennis R. Williams' Apollo 11 reverse carry the visual context surrounding the cud's location.

Attribution History

• Discovered by recclm50 on ebay
• Expert attribution by Cuds on Coins

External References