CU-1C-1977-06 Cud

Description

Bearing the catalog designation CU-1C-1977-06, this cud variety records the sixth terminal rim fracture documented on 1977 Philadelphia Mint Lincoln Memorial cents. The formation of a cud requires the complete separation of a segment of die steel from the die's edge — a catastrophic failure that leaves an open cavity in the working die surface. When the press continues to operate with a damaged die, each planchet struck receives a raised, shapeless mass of metal at the location of the missing rim segment. Cuds vary in size from small nicks barely spanning a few degrees of arc to massive breaks that consume a significant portion of the rim and obliterate nearby design elements. The specific size and position of CU-1C-1977-06 define its identity within the fifteen-entry 1977 Philadelphia cud census. Philadelphia's unprecedented production volume during 1977 placed extraordinary demands on die manufacturing and quality control, and the large number of documented cuds for this date provides a window into the scale of die attrition during peak production years. All 1977 Philadelphia cents were produced without a mint mark and from the 95% copper alloy standard for the denomination. CU-1C-1977-06 was cataloged by Cuds on Coins without additional cross-references from other attribution services. Attribution by Cuds on Coins.

Attribution History

• Discovered by Chuck Newman
• CU-1C-1977-06
• Expert attribution by Cuds on Coins

External References