Countermark

https://rpc.ashmus.ox.ac.uk/countermark/1207 
GIC
ear of corn
 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 1789 Show 1789 1 1
RPC I, 1789 Show 1789 2 1
RPC I, 1790 Show 1790 1 1