Watch List notes:

Q. Nasidius, Denarius, Mint moving with Sex. Pompeius, 44-43 BC; AR (g 3,57; mm 18; h 6); Head of Cn. Pompeius Magnus r.; before, trident; below, dolphin; behind, NEPTVNI, Rv. Ship sailing r.; above, star; below, Q NASIDIVS. Crawford 483/2; Pompeia 28, Nasidia 1; Sydenham 1350.
Rare, good portrait. Minor countermark on obverse, good very fine - about extremely fine.