2006 (P) Colorado State Quarter - CU-25c-2006P-04R(CO) Cud
Error
Attribution
Discovered by
Keith Bock on ebay
Verified by
Cuds on Coins
Original Research
Description
A reverse cud for the 2006 Philadelphia Colorado State Quarter, indicating repeated rim failure susceptibility on this design. Norman E. Nemeth's Rocky Mountain landscape with its relief transitions creates stress concentrations near the die rim where fatigue cracking initiates under sustained production. Philadelphia struck over 274 million Colorado quarters in 2006, subjecting each reverse die to millions of high-pressure impacts. Cataloged by Cuds on Coins with no additional cross-references established.
External References
Community & Reference
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