Countermark

https://rpc.ashmus.ox.ac.uk/countermark/415 
GIC 292
bull' head and neck, C F P D around
circular 
10 mm 
C F P D = Colonia Flavia Pacensis Deultensium 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 1951 Show 1951 13 1
Show 55
Show 186