Countermark

https://rpc.ashmus.ox.ac.uk/countermark/334 
GIC 210
ΑΙΖ or ΑΙ | (inverted Ζ)Α, Athena, helmeted bust r.
circular 
8 mm 
 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC II, 1368 Show 1368 6 2
RPC II, 1368 Show 1368 8 2
RPC II, 1368 Show 1368 7 2