Countermark

https://rpc.ashmus.ox.ac.uk/countermark/558 
GIC 437
star of eight rays
circular 
4 mm 
Amisus (Pontus)
The countermark was probably applied at some time before the next issue of coins under Vespasian and was contemporary with GIC 391 (on coins of Claudius) 
List of countermarks View on a map

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 2154 Show 2154 1 1
RPC I, 2154 Show 2154 3 1
RPC I, 2154 Show 2154 4 1
RPC I, 2154 Show 2154 6 1
RPC I, 2154 Show 2154 7 1
RPC I, 2154 Show 2154 8 1
RPC I, 2154 Show 2154 10 1