Watch List notes:

Q. Marcius Libo. AR Denarius, 148 BC. Obv. Helmeted head of Roma right; behind, LIBO; below chin, X. Rev. The Dioscuri galloping right; below, Q·MARC (MA ligate); in linear frame, ROMA. Cr. 215/1; B. (Marcia) 1 ; RRSC D 16. AR. 3.80 g. 20.50 mm. Superb example, sound metal. Well centred and brilliant. Good EF.