Henry VII Halfpenny, London, single arched crown, no mm or stops

Henry VII (1485-1509), silver Halfpenny, London Mint, facing crowned bust within beaded circle, single arched crown, legend surrounding, no initial mark or stops, hEnRIC DI GRA REX, rev. long cross pattee, trio of pellets in each inner angle, Latin legend and toothed border surrounding, CIVI TAS LOn DOn, weight 0.46g (Withers type 3Ab; N.1734; S.2244). Toned, with a charming little portrait, good very fine.