Henry VII (1485-1509), Facing bust issue, Halfgroat, York, mm. martlet, keys by bust, rev. eboraci apparently cut over london, 1.34g/6h (P & W 6; N 1716; S 2216). Slightly clipped and double-struck, otherwise about very fine and extremely rare (£300-400)

This altered die is not mentioned in Potter and Winstanley’s extensive review of the coinage, BNJ 1960-1