Watch List notes:

Q. Marcius Libo. AR Denarius, 148 BC. Obv. Helmeted head of Roma right; behind, LIBO; before, X. Rev. The Dioscuri galloping right; below, Q. MARC; in exergue, ROMA. Cr. 215/1. B. 8. AR. g. 3.99 mm. 20.00 Struck on a broad flan. Brilliant, superb and lightly toned. EF.