Watch List notes:

Halfgroat Henry VII Facing Bust issue, type III, Canterbury Mint, Reverse without M in centre, S.2209/10/11 (stops type not visible) mintmark Tun, 1.51 grammes, GVF and nicely toned on a ragged flan with loss of flan between 6 and 10 o'clock

Estimate: 25-75 GBP