Watch List notes:

Anonymous. 169-158 B.C. AE as (32.22 mm, 32.86 g, 4 h). Uncial standard. Rome mint. Laureate head of Janus; above, I / ROMA 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. aVF. Scarce. 

Ex RBW collection (not in previous sales).