Countermark

https://rpc.ashmus.ox.ac.uk/countermark/808 
GIC 687
Φ
Philius 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 1156 Show 1156 1 1
RPC I, 1156 Show 1156 2 1
RPC I, 1159 Show 1159 22 1