Countermark

https://rpc.ashmus.ox.ac.uk/countermark/183 
GIC 61
male head r.?
circular 
6 mm 
on reverse 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC IV, 3458 (temporary) Show 2565 2 4.2
RPC IV, 3458 (temporary) Show 2565 1 4.2