CU-1C-1985-30 Cud

Description

The economics of die replacement at the Philadelphia Mint provide context for the volume of cuds documented for 1985, including CU-1C-1985-30 on the Lincoln Memorial cent. Die replacement involves more than simply swapping one die for another — the process requires stopping the coining press, removing the spent die from its holder, installing the replacement, adjusting alignment and spacing, and running test strikes to verify proper operation before resuming production. This downtime, multiplied across the hundreds of press-hours needed to produce 5.65 billion cents annually, represented a significant operational cost. The Mint's response was a maintenance approach that balanced die longevity against quality standards: press operators inspected coins periodically and pulled dies when defects exceeded acceptable limits. Cuds that formed late in a die's run might produce only a few hundred coins before detection triggered replacement, while cuds on night shifts or during periods of reduced quality oversight might strike thousands of coins before the die was pulled. The variation in cud coin populations — some varieties known from a handful of specimens, others from dozens — reflects these differing intervals between cud formation and die retirement across the Philadelphia production floor. Struck on copper-plated zinc planchets at 2.5 grams and 19mm from the 1985 mintage of approximately 5.65 billion cents.

Attribution History

• Discovered by Sullivannumismatics on ebay
• CU-1C-1985-30
• Expert attribution by Cuds on Coins

External References