CU-10C-2012P-01R Rim Cud

Description

Cataloged as CU-10C-2012P-01R in the Cuds on Coins registry, this rim cud on a 2012 Philadelphia Roosevelt Dime formed when a piece of the die broke away at the rim, leaving a raised blob of unstruck metal on the coin's edge where the die fragment was missing. Cuds occur because coin dies are subjected to immense striking pressure — tens of tons per impression — and over time, fatigue cracks develop at the rim where stress concentrates. When a fragment finally separates, coins struck afterward carry a distinctive raised lump of metal that fills the void left by the missing die piece. The resulting cud is unique to each break, with its size, shape, and position serving as identifying characteristics. John R. Sinnock's Roosevelt Dime design has been in continuous production since 1946, and the modern Philadelphia Mint's high-speed production creates conditions where die fatigue and rim breaks occur across many denominations. Attributed by Cuds on Coins, this first-cataloged rim cud for the 2012 Philadelphia dime rewards collectors who examine rim areas carefully, as cuds can be easy to overlook amid normal rim contact marks in circulation.

Attribution History

• Discovered by Chuck Newman
• CU-10C-2012P-01R; none. 10/01/2013.
• Expert attribution by Cuds on Coins

External References