Watch List notes:

Decimius Flavus, Denarius, Rome, 150 BC; AR (g 3,21; mm 17; h 4); Helmeted head of Roma r.; behind, X, Rv. Luna in biga r., holding reins and whip; below, FLAVS; in ex. ROMA in linear frame. Crawford 207/1; Decimia 1; Sydenham 391.
Cabinet tone, about extremely fine.