Countermark

https://rpc.ashmus.ox.ac.uk/countermark/661 
GIC 531
ΔΗΜΟ
Demos. On reverse. 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 1331 Show 1331 3 1
RPC I, 1334 Show 1334 4 1
RPC I, 1334 Show 1334 3 1
RPC I, 1334 Show 1334 2 1
RPC I, 1335 Show 1335 2 1
RPC I, 1335 Show 1335 7 1
RPC I, 1335 Show 1335 8 1
RPC I, 1335 Show 1335 9 1
RPC I, 1335 Show 1335 10 1