Countermark

https://rpc.ashmus.ox.ac.uk/countermark/588 
GIC 462 ii
star and date ΑΟϹ
rectangular 
9 x 6 mm 
AD 210. On reverse 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC V.3, — (number not assigned), type ID 68291 Show 5222 1 5.3
RPC V.3, — (number not assigned), type ID 68259 Show 5223 1 5.3