Countermark

https://rpc.ashmus.ox.ac.uk/countermark/1177 
GIC
star of six rays?
 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 807 Show 807 9 1
RPC I, 4951 Show 4951 7 1
RPC I, 4943 Show 4943 9 1
RPC I, 4943 Show 4943 8 1