1970 (S) Lincoln Memorial Cent - Large Date - CU-1c-1970S-04(LD) Cud

Description

CU-1c-1970S-04(LD) documents a Large Date cud that is further distinguished by having been struck through a late-stage die cap — a secondary error compounding the primary cud. The cross-reference notation explicitly states that the coin was "struck through a late stage die cap," indicating that the die in question not only developed a rim fracture producing the cud but was also involved in a die cap event. A die cap forms when a previously struck coin adheres to the upper (hammer) die and remains in place as subsequent planchets are fed into the press. Each subsequent strike drives the trapped coin deeper onto the die, gradually forming it into a cap-shaped shell while simultaneously impressing a mirror image of the capped coin's reverse onto each new planchet struck beneath it. That this die simultaneously carried a cud fracture and participated in a die cap event makes CU-1c-1970S-04(LD) an unusual convergence of two distinct error mechanisms — a structural die failure and a striking anomaly — on the same die during the same production run. This Large Date variety demonstrates that die failures and striking errors are not mutually exclusive events but can compound on a single die, producing coins that carry evidence of multiple simultaneous anomalies.

Cross References

• Cross reference. Coin has been struck through a late stage die cap.

External References