No Date Cent Pattern - Pollock-4060, Copper GM Roller Dies

Coin Details

Description

A copper striking from General Motors roller dies in the cent denomination, specifically identified as being struck in copper rather than another metal. This variant of the P-4060 roller die experiment documents GM's testing of the roller-die concept using traditional coinage copper, allowing direct comparison with conventionally struck copper cents. Roller-die technology, which imparts designs through continuous rotary contact rather than reciprocating vertical pressure, offered potential advantages in production speed and die longevity — the rolling action distributes wear more evenly across the die surface than the concentrated impact of a conventional striking press. However, roller-die coinage never achieved the design sharpness and three-dimensional relief possible with traditional vertical striking, which is why the technology remained experimental. The copper composition of this variant produces the familiar warm reddish color of traditional American cents, providing a direct visual comparison with the Mint's standard product. These GM roller die pieces represent an interesting footnote in the history of coinage manufacturing technology, documenting private-sector innovation that ultimately did not displace the centuries-old vertical-press method.

Rarity Notes

R-7 to R-8 (Extremely Rare). Copper GM roller die patterns are scarce, with limited specimens documented.

Cross References

Pollock P-4060 (Copper variant). General Motors roller die experiment.