Countermark

https://rpc.ashmus.ox.ac.uk/countermark/612 
GIC 487
?, 'prow', perhaps a 'capricorn'
circular 
5 mm 
 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 1289 Show 1289 12 1
RPC I, 1289 Show 1289 25 1