Countermark

https://rpc.ashmus.ox.ac.uk/countermark/1412 
GIC
female advancing r.
oval 
7 x 4.5 mm 
This is a similar cmk for Nicaea Cilibanorum as GIC 398, although with the figure r., not l. applied some time later than the Antonine period. The figure possibly represents a wingless Nike after the name of the city. 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC VI, 30529 (temporary) Show 3957 2 6