Watch List notes:

Anonymous. 169-158 B.C. AE as (29 mm, 21.69 g, 9 h). Rome mint. Laureate head of Janus; above, I / [RO]MA in exergue, prow of galley right; above, she-wolf standing right, head left, suckling the twins Romulus and Remus, I to right. Crawford 183/1; Sydenham 297. Near Fine, black-green patina, encrustations. 

Ex RBW collection (not in previous sales).