Countermark

https://rpc.ashmus.ox.ac.uk/countermark/683 
GIC 554
ΝΙΚΟΜΗΔ
rectangular 
5.5 - 6.5 x 2 - 2.5 mm 
Uncertain (Uncertain)
Has been attributed to Cos, due to association with the GIC 355 Crab on the coin in Emerkingen, but might also be Nicomedia 
List of countermarks View on a map

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 1656 Show 1656 64 1
RPC I, 1656 Show 1656 99 1