Countermark

https://rpc.ashmus.ox.ac.uk/countermark/130 
GIC 12 ii
Helios (?), radiate head l.
circular (or slightly oval) 
5 mm 
on obverse 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC VII.2, 3334 Show 3334 15 7.2
RPC V.3, — (number not assigned), type ID 90359 Show 3250 1 5.3