Countermark

https://rpc.ashmus.ox.ac.uk/countermark/631 
GIC 504 ii
'various curvilinear motifs with pellets'
irregular 
uncertain 
Edessa (Mesopotamia)
Might have been applied at Dura 
List of countermarks View on a map

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
Show 58
RPC I, 4264 Show 4264 10 1