Countermark

https://rpc.ashmus.ox.ac.uk/countermark/1314 
GIC —
ΠΡΥ monogram
rectangular 
4 x 3 mm 
Prymnessus (Phrygia)
Not certain that ΠΡΥ is for Prymenessus, but probable 
List of countermarks View on a map

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 1657 Show 1657 37 1
RPC I, 1656 Show 1656 134 1