Countermark

https://rpc.ashmus.ox.ac.uk/countermark/563 
GIC 442
star of seven rays
Sometimes on reverse 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 2311 Show 2311 36 1
RPC I, 2311 Show 2311 35 1
RPC I, 2311 Show 2311 34 1
RPC I, 2311 Show 2311 33 1
RPC I, 2311 Show 2311 32 1
RPC I, 2311 Show 2311 31 1
RPC I, 2311 Show 2311 29 1
RPC I, 2311 Show 2311 19 1
RPC I, 2311 Show 2311 14 1
RPC I, 2311 Show 2311 11 1
RPC I, 2311 Show 2311 4 1
RPC I, 2311 Show 2311 1 1
RPC I, 2311 Show 2311 23 1
RPC I, 2311 Show 2311 25 1
RPC I, 2311 Show 2311 42 1