The Roman RepublicQ. Marcius Libo. . AR Denarius, 148 BC. Cr. 215/1. B. 8. 3.96 g. 19 mm. 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. 3.96 mm. 19.00 Sound metal and full weight. Brilliant and superb. EF.