Watch List notes:

C. Maianus, Quadrans, Rome, 153 BC; AE (g 6,97; mm 20; h 12); Head of Hercules r., wearing lion skin; behind, °°°, Rv. Prow r.; before, °°°; below, ROMA. Crawford 203/5; Maiania 5; Sydenham 428c.
Extremely rare, riverine patina, extremely fine.