Countermark

https://rpc.ashmus.ox.ac.uk/countermark/1276 
GIC
Monogram O with three bars
Pre-Roman countermark 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 4770 Show 4770 3 1
RPC I, 4770 Show 4770 23 1
RPC I, 4770 Show 4770 20 1
RPC I, 4770 Show 4770 19 1
RPC I, 4770 Show 4770 18 1
RPC I, 4770 Show 4770 17 1
RPC I, 4770 Show 4770 16 1
RPC I, 4770 Show 4770 15 1
RPC I, 4770 Show 4770 14 1
RPC I, 4770 Show 4770 4 1
RPC I, 4770 Show 4770 1 1
RPC I, 4768 Show 4768 2 1
RPC I, 4768 Show 4768 5 1
RPC I, 4768 Show 4768 8 1
RPC I, 4768 Show 4768 11 1
RPC I, 4770 Show 4770 24 1