Octavian. 27 BC-14 AD. AR Denarius, 23 mm, 3.57 g. Struck 30-29 BC. 

Bare head right.
IMP-CAESAR, trophy composed of helmet, cuirass, shield, and crossed spears set on prow of galley right. 

RIC I 265a; Sear, CRI 419; BMCRE 625; RSC 119.

With permission of Numismatica Ars Classica - Auction 33, Lot 393, April 2006.