Countermark

https://rpc.ashmus.ox.ac.uk/countermark/903 
GIC 774 i
denominational mark Γ
oval 
 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC IV, 1605 (temporary) Show 2420 16 4.2
RPC VIII, — (number not assigned), type ID 20327 Show 1041 10 8
RPC X, — (number not assigned), type ID 61085 Show 1859 1 10