1356-61 Edward III hammered silver groat – Fourth coinage: Pre Treaty -Series G – Std F type
Extra annulet in one qtr of reverse – annulet stops in reverse legend – annulet below bust

Ref North 1193

Obverse: + EDWARDo D G REX ANGL Z FRANCo oDo hYB
Reverse: CIVI/TAS/LON/DON
Mint: London