Q. Marcius Libo. AR Denarius, 148 BC. D/ Helmeted head of Roma right; behind, LIBO; below chin, X. R/ The Dioscuri galloping right; below, Q·MARC (MA ligate); in linear frame, ROMA. RRSC D16; Cr. 215/1; B. (Marcia) 1. 3.91 g. 20 mm. Banker's mark on obverse. Light tone. VF.