CU-25c-2006P-09R(CO) Cud
Error
Description
Closing out the highest documented sequence for the 2006 Philadelphia Mint Colorado State Quarter cuds, CU-25c-2006P-09R(CO) stands as the ninth reverse rim cud recorded for this issue. Nine cuds from a single coin type is an exceptional concentration, placing the Colorado quarter among the most die-failure-prone issues in the entire State Quarters Program. By this stage, the collective record documents at least nine instances where reverse dies fractured at the rim — each producing the characteristic raised featureless mass where metal filled the cavity left by the separated die fragment. Norman E. Nemeth's Longs Peak design, with its detailed mountain topography and evergreen foreground, required dies to maintain sharp relief across a complex composition. Colorado was admitted to the Union in 1876, and its quarter was one of five 2006 releases. For die variety specialists, a nine-entry cud catalog for one coin type provides rich material for studying rim failure patterns, die longevity, and the relationship between design complexity and die stress. The cumulative evidence suggests that Colorado quarter production pushed dies to their mechanical limits with notable regularity.
Attribution History
- Discovered by Chuck Newman
- Expert attribution by Cuds on Coins
External References
Community & Reference
Related Errors
More Cud Errors
Collector Essentials
Tools for examining and preserving error coins and die varieties.
10x-20x Jeweler's Loupe
Essential for examining die varieties, doubled dies, and RPMs
Cherry Picker's Guide
The definitive reference for U.S. error coins and die varieties
2x2 Coin Flips & Holders
Protect and organize your finds with archival-quality holders
USB Digital Microscope
Capture detailed images for documentation and community submissions
As an Amazon Associate, NumisDex earns from qualifying purchases.









