Countermark

https://rpc.ashmus.ox.ac.uk/countermark/536 
GIC 414
bunch of grapes
circular 
the cmks GIC 180 and GIC 414 were applied to coins of Plarasa and Aphrodisias which were excuded from RPC I as being too early. The cmks were included in GIC as the coins had been previously attributed to the time of Augustus. 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber