1 Crown - William III 3rd bust, 2nd harp

William III's recoinage of 1696–97 was one of the most ambitious monetary operations in English history, undertaken because the existing hammered silver coinage had been so extensively clipped that coins were routinely passing at half their face value. Newton — yes, Isaac Newton, appointed Warden of the Mint in 1696 — supervised much of the logistical effort, coordinating five country mints at Bristol, Chester, Exeter, Norwich, and York to meet demand. The third bust variety emerged mid-recoinage as engravers refined the portrait, and the revised harp on the reverse reflects similar incremental corrections made under production pressure.