Countermark

https://rpc.ashmus.ox.ac.uk/countermark/1715 
GIC —
N incuse
incuse 
4 mm high x 3 mm wide 
Uncertain (Uncertain)
might be graffiti on a Macedonian coin from an uncertain city 
List of countermarks View on a map

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 1536 Show 1536 10 1