Watch List notes:

Anonymous. 189-180 B.C. AE as (33 mm, 33.41 g, 2 h). Rome. Laureate head of Janus; above, I / [ROMA] in exergue, prow of galley right; above, Victory flying right and spearhead; in right field, I. Crawford 145/1; Sydenham 293. Fine, green patina. 

Ex RBW collection (not in previous sales); Aes Rude (1 June 1991), 114.