Countermark

https://rpc.ashmus.ox.ac.uk/countermark/1284 
GIC
ΚΟΤΙ, Cybele seated l., holding patera, resting on drum
circular 
11.5 mm 
 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC IV, 25028 (temporary) Show 4051 1 4.2