CU-1C-1977-10 Cud

Description

Reaching the tenth documented cud for the 1977 Philadelphia cent, CU-1C-1977-10 marks the point at which this date's rim break census enters double digits — a milestone that few other dates in the Lincoln Memorial cent series have achieved. Cataloged by Cuds on Coins, this variety represents yet another working die that suffered complete rim separation during Philadelphia's enormous 1977 production campaign. The mechanics of cud formation are uniform across all instances: cyclic fatigue in the die steel nucleates cracks at stress concentration points, these cracks grow with each successive strike, and eventually a segment of the rim detaches. What varies from one cud to the next is the specific location of the break around the die circumference, the size of the separated fragment, and which design elements are affected. These variables give each cud its unique visual fingerprint and are the basis for distinguishing CU-1C-1977-10 from the nine entries that precede it and the five that follow. Philadelphia's 1977 cents were produced without a mint mark from 95% copper planchets, and the vast majority entered general circulation where they remain available to collectors willing to search rolls, bags, and dealer junk boxes for error specimens. Attribution by Cuds on Coins.

Attribution History

• Discovered by Robert E
• CU-1C-1977-10
• Expert attribution by Cuds on Coins

External References