Countermark

https://rpc.ashmus.ox.ac.uk/countermark/1492 
GIC —
ϹƐΛΙ(?)
rectangular 
10.5 x 5 mm 
Selinus-Traianopolis (Cilicia)
No countermarks recorded on coins from Selinus so might be Selge (Pisidia) although Γ not visible? 
List of countermarks View on a map

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 3868 Show 3868 40 1
RPC I, 3868 Show 3868 39 1