Countermark

https://rpc.ashmus.ox.ac.uk/countermark/360 
GIC 238
Asclepius - use GIC 238i for coins of Domitian and Domitia, GIC 238ii for coins of Trajan and civic; time of Trajan
oval 
Use 238i or 238 ii not 238 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber