Countermark

https://rpc.ashmus.ox.ac.uk/countermark/562 
GIC 441
star of eight rays (on reverse)
circular 
5 mm 
 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 1656 Show 1656 23 1
RPC I, 1657 Show 1657 36 1
RPC I, 1656 Show 1656 125 1