CU-25c-2006P-06R(CO) Cud

Description

Sixth reverse rim cud documented for the 2006 Philadelphia Colorado State Quarter, making this one of the highest cud counts for any single State Quarter reverse design. Norman E. Nemeth's Colorado reverse, depicting a dramatic Rocky Mountain landscape with "Colorful Colorado" banner and the state outline, features significant relief transitions between mountain peaks, valleys, and the flat banner area that create stress concentrations near the die rim. Six cuds from a single reverse design and mint combination strongly suggests that design-related stress factors, rather than random die failure, drove the elevated fracture rate. Philadelphia struck over 274 million Colorado quarters in 2006, subjecting each reverse die to enormous cumulative striking forces throughout its service life. Cataloged by Cuds on Coins with no additional cross-references established from other attribution organizations. The Colorado State Quarter's cud-rich history makes it a prime target for die break specialists assembling comprehensive State Quarter error collections, alongside other famously cud-prone issues like the 2004 Wisconsin and 2005 Kansas quarters.

Attribution History

• Discovered by Chuck Newman
• Expert attribution by Cuds on Coins

External References