Watch List notes:

Q. Marcius Libo. AR Denarius, 148 BC. Helmeted head of Roma right; behind, LIBO; before, X. / The Dioscuri galloping right; below, Q. MARC; in exergue, ROMA. Cr. 215/1. B. 8. AR. 3.84 g. 20.50 mm. Sharply struck on a broad flan, from masterly engraved dies. Superb and lightly toned. EF.