Countermark

https://rpc.ashmus.ox.ac.uk/countermark/363 
GIC 239
Asclepius
oval 
6.5 x 5.5 mm 
Uncertain (Uncertain)
GIC 239 might be the same cmk as GIC 240 (applied at Nicaea Cilibanorum). The 239 punch size could be accomodated in the (variable) punch sizes of 240 and all coins are Severan. 
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Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
Show 235