Watch List notes:

L. Sempronius Pitio. 148 B.C. AE as (30.7 mm, 19.97 g, 10 h). Rome mint. PI-TIO above, laureate head of bearded Janus; I above / [L S]EMP / ROMA, prow of galley right; I to right. Crawford 216/2a; Sydenham 403. Fine, sandy patina. 

Ex RBW collection (not in previous sales).