Countermark

https://rpc.ashmus.ox.ac.uk/countermark/501 
GIC 381
branch?
rectangular 
 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC III, 1664 Show 1664 1 3
RPC III, 1667 Show 1667 2 3
RPC III, 1667 Show 1667 5 3