Watch List notes:

Horatius. 206-200 B.C. AR denarius (17.9 mm, 3.32 g, 4 h). Rome mint. Helmeted head of Roma right; X behind / ROMA in exergue, the Dioscuri riding right, each holding couched lance; female head below. Crawford 127/1; Sydenham 277; RSC Horatia 1. Toned aVF. Rare. 

Ex RBW collection (not in previous sales).