Cnaeus Pomepius Magnus Q. Nasidius. Denarius, mint moving with Sextus Pompeius 44-43 BC, AR 3.44 g. 

NEPTVNI, head of Pompey right, trident in right field,
dolphin below.
Q NASIDIVS beneath galley right with sail and rowers, 
star in upper left field.

Pompeia 28; Nasidia 1; RSC 20; Crawford 483/2; Sydenham 1350; Sear Imp. 235
Rare.

With permission of Numismatica Ars Classica Auction 62, Lot 2002, Oct. 2011.
Ex S.C. Markoff Collection of Roman Coins