Countermark

https://rpc.ashmus.ox.ac.uk/countermark/110 
GIC 616
ΡΗΕ (ΕΙΡΗ? = Irenopolis)
ligature 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC VII.2, 3218 Show 3218 23 7.2
RPC VII.2, 3218 Show 3218 16 7.2
RPC VII.2, 3218 Show 3218 31 7.2
RPC VII.2, 3218 Show 3218 21 7.2