Countermark

https://rpc.ashmus.ox.ac.uk/countermark/1263 
GIC
draped bust, r.
circular (or slightly oval) 
 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 3151 Show 3151 16 1
RPC I, 3151 Show 3151 19 1
RPC I, 3151 Show 3151 20 1
RPC I, 3151 Show 3151 22 1