1787 Vermont Copper. RR-13, Bressett 17-V, W-2255. Rarity-1. BRITANNIA--Double Struck--Good-4 (PCGS). 93.8 grains. A neat major error example of this variety. Double struck RR-13s are seen from time to time, but rarely with this amount of offset between strikes. Well worn light brown surfaces are mildly porous but overall decent for the grade. From the Norman G. Peters Collection.