Watch List notes:

Sextus Quinctilius. Ca. 189-180 B.C. AR denarius (19.6 mm, 3.66 g, 1 h). Rome mint. Helmeted head of Roma right, X behind / SX·Q, ROMA, the Dioscuri riding right, holding spears, star above each. Crawford 152/1b; Sydenham 287; RSC Quinctilia 1. Fine. Rare. 

Ex RBW collection (not in previous sales).