Countermark

https://rpc.ashmus.ox.ac.uk/countermark/1176 
GIC
cock with Q
 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 514 Show 514 15 1
RPC I, 518 Show 518 1 1
RPC I, 518 Show 518 169 1
RPC I, 518 Show 518 173 1
RPC I, 518 Show 518 174 1