CU-1C-1976-05 Cud

Description

Fifth in the 1976 Philadelphia cud catalog, CU-1C-1976-05 documents another terminal rim fracture from the Bicentennial year's cent production at Philadelphia. Rim cuds are the product of a fundamental mechanical reality: every die has a finite service life, and the rim — where the die face meets the collar groove — represents the most structurally vulnerable zone. As the die absorbs the cumulative impact of hundreds of thousands of high-pressure strikes, fatigue cracks nucleate at stress concentration points along this edge and propagate through the steel until a segment breaks free. The resulting void fills with planchet metal on each subsequent strike, leaving a raised, featureless blob that obliterates whatever design elements occupied that portion of the rim. Cataloged by Cuds on Coins without additional cross-reference numbers, CU-1C-1976-05 adds to the growing census of rim failures from a date that saw intensive production at the Philadelphia Mint. The 1976 Philadelphia cent bore no mint mark and used the standard 95% copper composition, continuing the denomination's established specifications despite the Bicentennial celebrations that transformed the designs of three other denominations. Five documented cuds places this date's census at a level consistent with other high-mintage years in the Lincoln Memorial cent series. Attribution by Cuds on Coins.

Attribution History

• Discovered by Tony J
• CU-1C-1976-05
• Expert attribution by Cuds on Coins

External References