Watch List notes:

British Coins from Various Properties

Edward III (1327-1377), Treaty period, Halfgroat, variety f, London, mm. cross potent, reads posvi, reverse-barred ns in london, 1.87g/2h (DIG 7/–; N 1259; S 1620). Clipped, otherwise very fine and very rare, the reverse variety not listed by Greenhalgh
£100-£150