Countermark

https://rpc.ashmus.ox.ac.uk/countermark/475 
GIC 355
crab
 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 1656 Show 1656 64 1
RPC I, 1656 Show 1656 98 1
RPC I, 1656 Show 1656 103 1
RPC I, 1656 Show 1656 107 1