1866 Proof Nickel Pattern - J-503

Coin Details

Auction Record

$8,050 PR61 03-01-2009 Stack's

Description

This proof pattern belongs to the latter portion of the 1866 Shield Nickel composition series, testing a formulation from the advanced experimental range. The consistency of the Shield design across all these variants underscores an important principle of pattern coinage: by changing only one variable at a time — the alloy — while keeping the design constant, the Mint could isolate the specific effects of each composition on coin appearance and performance. This controlled-experiment methodology predates its widespread adoption in industrial research by decades, making the 1866 nickel testing program a remarkably sophisticated exercise for its era.

Rarity Notes

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

Cross References

Pollock-3571