Countermark

https://rpc.ashmus.ox.ac.uk/countermark/1261 
GIC
ΝΕ / Ζ in circular incuse
 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 3661 Show 3661 3 1
RPC I, 3661 Show 3661 2 1
RPC I, 3661 Show 3661 4 1