CU-1C-1975D-06 Rim Cud

Description

Explicitly titled as a "Rim Cud" in its original catalog listing, CU-1C-1975D-06 emphasizes that this die break occurred precisely at the outermost edge of the die — the rim — rather than as an interior break within the design field. This sixth entry in the 1975 Denver Mint cud census was documented by Cuds on Coins and carries no additional cross-reference numbers from other attribution services. Rim cuds are the most common form of major die break because the rim represents the thinnest and most mechanically stressed portion of the die face: it absorbs the impact of the collar on every strike, and the sharp geometry where the design meets the die's edge creates natural stress concentration points where fatigue cracks tend to initiate and propagate. Once a crack reaches critical length, the rim fragment separates, and the die continues producing coins with a raised, featureless blob at the break location. The "Rim Cud" designation in the title serves to distinguish this variety from interior die breaks (sometimes called "retained cuds" or "die chips") where die material separates within the design field rather than at the periphery. CU-1C-1975D-06 adds to the substantial body of evidence that Denver's 1975 cent dies were working under significant mechanical duress throughout the production year. Attribution by Cuds on Coins.

Attribution History

• Discovered by Marvin L
• CU-1C-1975D-06
• Expert attribution by Cuds on Coins

External References