Countermark

https://rpc.ashmus.ox.ac.uk/countermark/414 
GIC 291
boar r., foot on dolphin, LXF above
rectangular 
11 x 7 mm 
Sometimes on reverse; the boar was a symbol of X Fretensis 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC II, 2226 Show 2226 10 2
RPC II, 2226 Show 2226 12 2
RPC II, 2226 Show 2226 15 2
RPC II, 2226 Show 2226 17 2
RPC II, 2311 Show 2311 37 2
RPC II, 2226 Show 2226 24 2
RPC II, 2226 Show 2226 25 2
Show 117