1866 Proof Nickel Pattern - J-466a

Coin Details

Description

The "a" suffix on this Judd number designates a variant striking of J-466 in an alternative composition or with a different edge treatment. Such variants were common in the 1866 nickel pattern program, as the Mint tested each promising design in multiple metals to evaluate visual appearance and striking characteristics across different alloys. While J-466 was struck in the standard copper-nickel composition, J-466a uses pure nickel, copper, aluminum, or another experimental alloy. These compositional variants are typically rarer than the primary striking, as fewer pieces were produced in each alternative metal. Collectors of the nickel pattern series consider the "a" variants essential to a complete understanding of the Mint's methodical alloy testing program.

Rarity Notes

R.7. Approximately 5-12 examples exist.

Cross References

Pollock-3534