Countermark

https://rpc.ashmus.ox.ac.uk/countermark/568 
GIC 447
star with eight rays
circular 
4 mm 
Phaselis (Lycia)
cmk on a coin of Phaselis, might have been applied elsewhere? 
List of countermarks View on a map

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 3362b Show 3362 1 1