Countermark

https://rpc.ashmus.ox.ac.uk/countermark/75 
GIC 768
denominational mark Β
incuse 
c. 4 mm tall, 2 mm wide 
on coins 17-19 mm in diameter 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC IX, 1041 Show 1041 1 9
RPC IX, 1041 Show 1041 5 9
RPC IX, 1040 Show 1040 3 9
RPC IX, 1040 Show 1040 2 9
RPC IX, 1040 Show 1040 4 9