Countermark

https://rpc.ashmus.ox.ac.uk/countermark/966 
GIC 850 no photo
ΚΚ (on silver coins)
Caesarea (Cappadocia)
as 850i and 850ii 
List of countermarks View on a map

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 3638 Show 3638 2 1