Countermark

https://rpc.ashmus.ox.ac.uk/countermark/161 
GIC 40
ΑΥΤΟΚ | ΑΝΤωΝƐΙ, Caracalla?, head r., caduceus below, all in a dotted circle
circular 
c10 mm 
 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC IV, 609 (temporary) Show 909 7 4.2
RPC IV, 609 (temporary) Show 909 4 4.2
RPC IV, 2369 (temporary) Show 915 3 4.2