Countermark

https://rpc.ashmus.ox.ac.uk/countermark/750 
GIC 627
monogram ΟΠΑ? (on reverse)
circular 
4.5 mm 
Dionysopolis (Phrygia)
no certainty applied at Dionysopolis 
List of countermarks View on a map

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 3120 Show 3120 5 1