Countermark

https://rpc.ashmus.ox.ac.uk/countermark/1507 
GIC
head r. (circular punch)
circular 
7 mm 
 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 5436A Show 5436 4 1
RPC I, 5436B Show 5436 3 1
RPC V.2, — (number not assigned), type ID 64233 Show 4520 26 5.2