1866 Proof Nickel Pattern - J-511

Coin Details

Description

J-511 is one of the latest numbers in the core Shield Nickel alloy testing sequence, located near the boundary between standard alloy experiments and the most unusual compositions in the series. The positioning of this variety indicates it may test an alloy that bridges conventional coinage metals with more experimental formulations, combining familiar elements like copper and nickel in unusual proportions or adding secondary elements like manganese, zinc, or silicon. The proof striking captures whatever distinctive characteristics this particular alloy imparts to the Shield design, preserving a detailed record of a composition that was ultimately rejected in favor of the elegant simplicity of the standard 75/25 blend.

Rarity Notes

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

Cross References

Pollock-3579