Watch List notes:

Q. Marcius Libo, Denarius,Rome, 148 BC, AR, (g 3,90, mm 20, h 2). Helmeted head of Roma r.; behind, LIBO; before, X, Rv. The Dioscuri galloping r.; below, Q MARC; in ex. ROMA in partial tablet. Crawford 215/1; Marcia 1; Sydenham 396; Catalli 278.
Large flan. Cabinet tone. Extremely fine.