Watch List notes:

Q. Marcius Libo. AR Denarius, 148 BC. D/ Helmeted head of Roma right; behind, LIBO; before, X. R/ The Dioscuri galloping right; below, Q. MARC; in exergue, ROMA. Cr. 215/1. B. 8. AR. g. 4.01 mm. 20.00 Sound metal, full weight and broad flan. Brilliant and superb. EF.