Countermark

https://rpc.ashmus.ox.ac.uk/countermark/760 
GIC 637
monogram ΡΟΜΗ
Rome 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 2090 Show 2090 1 1
RPC I, 2091 Show 2091 1 1
RPC I, 2092A Show 2092 3 1