Agrippa & Augusutus Gaul, Nemausus. ca 27 BC. Dupondius.

Heads of Agrippa and Augustus back to back, that of
Agrippa wearing rostral crown and laurel wreath, that of Augustus
bare.
Palm shoot with tip to right behind chained crocodile;
above palm shoot, wreath with long ties. 

RIC I 155; RPC 522. 

With permission of www.artcoinsroma.it, Auction Dec. 2011.