CU-1c-1982-32(LD) Rim Cud

Description

Another peripheral fracture in the catalog, CU-1c-1982-32(LD) on the Zinc Large Date at 2.5 grams records a rim cud whose break geometry remained confined to the die-collar interface zone rather than propagating inward through the design field. Rim cuds at this census depth — thirty-two entries into the Large Date series — demonstrate that peripheral fractures continue to appear at a steady rate throughout the catalog's growth, maintaining roughly the same proportional representation relative to interior cuds that was established in earlier entries. This consistency suggests that the mechanical factors governing where a fatigue crack initiates on the die face — rim versus interior — operate independently of the total number of die failures accumulated in the census, reflecting fundamental stress distribution patterns inherent to the die-collar-planchet system rather than any systematic change in die manufacturing or press operation over the production run. On the zinc planchet, the rim cud's narrow raised strip follows a segment of the coin's edge in copper-plated zinc, and the characteristic flat die-struck quality of this raised metal distinguishes it from the irregular deformation profile of post-mint edge damage caused by mechanical contact. This zinc version pairs with its bronze counterpart under the same census designation. Attribution by Cuds on Coins.

Attribution History

• Discovered by Jay Dunn
• Expert attribution by Cuds on Coins

External References