Countermark

https://rpc.ashmus.ox.ac.uk/countermark/1397 
GIC
DD with branch between, border of dots
circular 
8 mm 
Separated from DD with branch between form Cossura 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 523 Show 523 141 1
RPC I, 523 Show 523 152 1
RPC I, 523 Show 523 154 1