1985 (P) Lincoln Memorial Cent - CU-1C-1985-27 Rim Cud

Description

One of six rim cuds documented for the 1985 Philadelphia Lincoln Memorial cent (CU-26, -27, -33, -34, -40 and -44), CU-1C-1985-27 belongs to a rim cud subset within the date's larger cud population. Rim cuds differ mechanically from standard cuds in how the fracture propagates through the die. In a standard cud, cracks extend from the rim inward, eventually isolating a section of the die face that includes both rim and field areas. In a rim cud, part of the die's rim gutter is lost, which appears on the coin as a raised interruption in the design rim that tracks the rim's course. This fracture pattern reflects the rim's structural role: on a Lincoln cent die, the rim is formed by a raised ring that serves as the outermost boundary of the design cavity. This ring is structurally thin compared to the die's central mass and experiences concentrated stress as it forms the coin's rim during striking. Fractures that propagate along this thin ring rather than through the thicker interior produce the characteristic rim cud morphology.

Cross References

• CU-1C-1985-27

External References