Countermark

https://rpc.ashmus.ox.ac.uk/countermark/497 
GIC 377
laurel branch
square 
4 mm 
sometimes on reverse 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 2700 Show 2700 8 1
RPC I, 2697 Show 2697 15 1
RPC II, 1147 Show 1147 3 2