Watch List notes:

M. Atilius Serranus, Denarius, Rome, 148 BC; AR (g 3,71; mm 18; h 6); Helmeted head of Roma r.; behind, SARAN; before, X, Rv. The Dioscuri galloping r.; below, M ATILI; in ex. ROMA in partial frame. Crawford 214/1b; Atilia 8; Sydenham 398b.
Lustrous, extremely fine.