Vienne, Gaul, AE As or dupondius, 

IMP CAESAR DIVI F DIVI IVLI, bare heads of Caesar, left; and Octavian, right / 
C-I-V, Galley-prow right with mast and elaborate, multi-level cabin superstructure. 

RPC 517; Sear Greek Imperial 149; Sear Greece 152.

With permission of Dr. Busso Peus Nachfolger auction 420, Lot 172, Nov. 2017.