Countermark

https://rpc.ashmus.ox.ac.uk/countermark/851 
GIC 729 i
XF
 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC II, 1983 Show 1983 21 2
RPC I, 3868 Show 3868 14 1
RPC I, 4307 Show 4307 21 1
Show 44