Watch List notes:

Anonymous. 169-158 B.C. AE as (29 mm, 24.39 g, 6 h). Rome. Laureate and bearded head of Janus; above, I / [ROMA] in exergue, prow of galley right; above, star; in right field, I. Crawford 196/1; Sydenham 264. Near Fine, brown and sandy-green patina. 

Ex RBW collection (not in previous sales).