1866 Proof Nickel Pattern - J-500

Coin Details

Description

A notable landmark in the 1866 Shield Nickel pattern numbering sequence, J-500 is a convenient reference point in the extensive alloy testing series. By this juncture, the Mint had tested approximately thirty different compositions on the Shield Nickel dies, creating a metallurgical library of unprecedented scope for American coinage. The program's scale was justified by the denomination's anticipated production volume — within two years of its launch, the five-cent nickel would be produced in quantities exceeding twenty million pieces annually, making any alloy deficiency enormously costly to correct after the fact. The deliberate, comprehensive nature of the testing ensured that when production commenced, the chosen alloy had been validated through exhaustive comparison with alternatives.

Rarity Notes

R.6 to R.7. Approximately 10-15 examples estimated.

Cross References

Pollock-3568