Countermark

https://rpc.ashmus.ox.ac.uk/countermark/431 
GIC 309
Capricorn r.
circular (or slightly oval) 
6 mm 
all examples of GIC 309 are on RPC I, 3063 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 3063 Show 3063 1 1
RPC I, 3063 Show 3063 3 1
RPC I, 3063 Show 3063 9 1
RPC I, 3063 Show 3063 10 1
RPC I, 3063 Show 3063 11 1
RPC I, 3063 Show 3063 13 1
RPC I, 3063 Show 3063 20 1
RPC I, 3063 Show 3063 25 1
RPC I, 3063 Show 3063 32 1
RPC I, 3063 Show 3063 35 1
RPC I, 3063 Show 3063 36 1