Watch List notes:

Anonymous [Fly]. Ca. 179-170 B.C. AR denarius (19.59 mm, 3.75 g, 8 h). Rome mint. Helmeted head of Roma right, X behind / ROMA, Diana driving biga right; fly below. Crawford 159/2; Sydenham 322; RSC 22b. Fine. Scarce. 

Ex RBW collection (not in previous sales).