CU-25c-1979D-01R Rim Cud

Description

First documented rim cud on the reverse of a 1979 Denver Mint Washington Quarter, this variety records a die rim fracture where a piece of the reverse die broke away entirely during production. A cud forms when a section of the die rim separates completely, and the resulting cavity fills with metal during striking to produce a raised, featureless mass at the edge of the coin. The "R" suffix designates this as a reverse cud, distinguishing it from obverse rim failures. John Flanagan's classic Washington Quarter design was in its forty-seventh year of production in 1979, with Denver's high-volume striking consuming numerous die pairs across extended press runs. The mechanical forces of repeated striking concentrate stress at the die rim, where the sharp edge creates a natural fracture initiation point. Cataloged by Cuds on Coins, CU-25c-1979D-01R demonstrates that rim cuds occur across all denominations — the die failure mechanism is universal, affecting the edge of any die regardless of coin size or composition. Collectors of Washington Quarter die varieties will find cuds less commonly documented than on Lincoln Cents.

Attribution History

• Discovered by Fred Weinberg
• Expert attribution by Cuds on Coins

External References