Countermark

https://rpc.ashmus.ox.ac.uk/countermark/881 
GIC 745
denominational mark IS
1½ asses. Sometimes on reverse 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 1359 Show 1359 1 1
RPC I, 1359 Show 1359 4 1
RPC I, 1359 Show 1359 11 1
RPC I, 1359 Show 1359 15 1
RPC I, 1359 Show 1359 19 1
RPC I, 1359 Show 1359 23 1
RPC I, 1359 Show 1359 25 1
RPC I, 1359 Show 1359 26 1
RPC I, 1359 Show 1359 36 1