1871 Proof Dollar Pattern - J-1138d

Coin Details

Description

Testing the J-1138 design in yet another composition, this variant extends the metallurgical survey to include additional alloy options beyond the standard trio of silver, copper, and aluminum. The breadth of this testing program indicates that the J-1138 design was being seriously considered as a leading candidate for the final Trade Dollar, justifying the expense of producing it in multiple exotic compositions for comparison and evaluation.

Rarity Notes

R-7 to R-8. Very rare, estimated 3-8 examples survive.

Cross References

Judd-1138d, Pollock-1273d