Countermark

https://rpc.ashmus.ox.ac.uk/countermark/931 
GIC 816 i
denominational mark Ϛ
circular 
 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC VIII, — (number not assigned), type ID 20250 Show 1363 11 8
RPC X, — (number not assigned), type ID 61665 Show 2114 1 10
RPC X, — (number not assigned), type ID 61650 Show 2072 2 10
RPC X, — (number not assigned), type ID 90043 Show 2106 1 10