CU-1c-1982-30(SD) Rim Cud

Description

Classified as a rim cud, CU-1c-1982-30(SD) on the Bronze Small Date at 3.1 grams documents a peripheral die fracture confined to the outermost edge of the die face on one of the scarcer 1982 Philadelphia subtypes. Rim cuds on the Bronze Small Date represent a convergence of two relatively uncommon attributes — the peripheral fracture geometry and the limited-production-window host coin — that makes this entry notably harder to locate than rim cuds on the dominant Bronze Large Date subtype. The die fracture that produced this rim cud initiated at the stress concentration point where the working die's face meets the collar interface, a geometrically abrupt transition zone that concentrates fatigue loading under the repetitive impact of high-speed coining operations. Unlike interior cuds that displace portrait features or legend lettering, rim cuds produce a narrow raised metallic strip along the coin's periphery that can be difficult to distinguish from post-mint edge damage without careful examination of the struck surface quality. On the bronze planchet, the rim cud's raised strip is solid 95% copper alloy, and its flat die-struck character — as opposed to the irregular, mechanically deformed profile of handling damage — serves as the primary diagnostic for authenticating the variety. This entry pairs with its zinc counterpart. Attribution by Cuds on Coins.

Attribution History

• Discovered by Chuck Newman
• Expert attribution by Cuds on Coins

External References