Countermark

https://rpc.ashmus.ox.ac.uk/countermark/1409 
GIC
uncertain in oval punch
oval 
 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 4307 Show 4307 5 1
RPC I, 4307 Show 4307 6 1
RPC III, 3653 Show 3653 83 3