CU-1C-1977D-10 Cud

Description

Reaching the tenth documented position in the 1977 Denver Mint cud census, CU-1C-1977D-10 records another terminal rim fracture from the Denver facility's Lincoln Memorial cent production. Ten confirmed cuds from a single date-mint combination places the 1977-D cent among the more extensively documented dates for rim break errors in the Lincoln Memorial cent series — a reflection of both the high production volumes at Denver and the attentiveness of the error collecting community in submitting specimens to attribution services. The cud error mechanism is consistent across all entries: fatigue-driven crack propagation through the hardened die steel at the rim culminates in the complete separation of a fragment, and the resulting cavity produces a raised, featureless blob of extruded planchet metal on every coin struck from the damaged die until it is detected and replaced. CU-1C-1977D-10 was cataloged by Cuds on Coins without additional cross-reference numbers from alternative attribution services. The 1977 Denver cent was struck from the standard 95% copper composition with Denver's hand-punched "D" mintmark, and the enormous volume of dies consumed across the production year made terminal rim failures a statistical certainty. Collectors seeking this variety should compare the break's clock-position and geometry against the reference record to confirm the attribution. Attribution by Cuds on Coins.

Attribution History

• Discovered by Chuck Newman
• CU-1C-1977D-10
• Expert attribution by Cuds on Coins

External References