Countermark

https://rpc.ashmus.ox.ac.uk/countermark/924 
GIC 811 i
denominational mark Ϛ
circular 
5 mm 
Ephesus (Ionia)
Probably applied at Ephesus 
List of countermarks View on a map

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC X, — (number not assigned), type ID 60900 Show 1716 4 10