Countermark

https://rpc.ashmus.ox.ac.uk/countermark/928 
GIC 813
denominational mark Ϛ
circular 
6.5 mm 
Sometimes on reverse 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC X, — (number not assigned), type ID 61345 Show 1638 6 10
RPC X, — (number not assigned), type ID 61345 Show 1638 5 10
RPC X, — (number not assigned), type ID 61345 Show 1638 1 10
RPC X, — (number not assigned), type ID 61345 Show 1638 2 10
RPC X, — (number not assigned), type ID 61346 Show 1637 1 10
RPC X, — (number not assigned), type ID 61347 Show 1666 4 10
RPC X, — (number not assigned), type ID 61348 Show 1667 6 10
RPC X, — (number not assigned), type ID 61348 Show 1667 4 10
RPC X, — (number not assigned), type ID 61348 Show 1667 3 10
RPC X, — (number not assigned), type ID 61350 Show 1665 1 10
RPC X, — (number not assigned), type ID 61352 Show 1664 11 10
RPC X, — (number not assigned), type ID 61352 Show 1664 3 10
RPC X, — (number not assigned), type ID 61357 Show 1673 5 10
RPC X, — (number not assigned), type ID 61357 Show 1673 9 10
RPC X, — (number not assigned), type ID 61357 Show 1673 10 10
RPC X, — (number not assigned), type ID 82877 Show 1675 2 10
RPC X, — (number not assigned), type ID 61358 Show 1681 3 10
RPC X, — (number not assigned), type ID 61358 Show 1681 4 10
RPC X, — (number not assigned), type ID 61358 Show 1681 2 10
RPC X, — (number not assigned), type ID 61358 Show 1681 7 10
RPC X, — (number not assigned), type ID 61358 Show 1681 13 10
RPC X, — (number not assigned), type ID 61362 Show 1679 5 10
RPC X, — (number not assigned), type ID 61363 Show 1682 1 10
RPC X, — (number not assigned), type ID 61363 Show 1682 4 10
RPC X, — (number not assigned), type ID 61519 Show 1722 12 10
RPC X, — (number not assigned), type ID 61345 Show 1638 10 10
RPC X, — (number not assigned), type ID 61345 Show 1638 14 10
RPC VI, 5352 (temporary) Show 4967 2 6