Countermark

https://rpc.ashmus.ox.ac.uk/countermark/1434 
Martini, Pangerl 109
eagle head r.
oval 
6 x 4 mm 
applied in Syria to Tiberian dupondii 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 3868 Show 3868 16 1