Countermark

https://rpc.ashmus.ox.ac.uk/countermark/1248 
GIC
CLAV AVG
rectangular 
12.5 x 4.5 mm 
 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 2101A Show 2101 2 1
RPC I, 2101A Show 2101 3 1
RPC I, 2101 Show 2101 1 1