Watch List notes:

BRITISH COINS, Charles I, Silver Halfgroat, Tower Mint under Parliament, initial mark sceptre (1646-1648), group G, seventh crowned bust left, value behind, rev oval quartered shield of arms, 0.90g (Brooker 692; N 2260; S 2836). Double struck on reverse, otherwise toned, good very fine and the final mark for the mint.

Estimate: £150-200