Watch List notes:

Anonymous. ca. 269 B.C. AE litra (17.0 mm, 3.86 g, 5 h). Rome mint. ROMANO, Head of Minerva left wearing Corinthian helmet / ROMANO, horse’s head right. Crawford 17/1a; Sydenham 3; HN Italy 278. aVF, black patina with green highlights. 

Ex RBW collection (not in previous sales). 

This coin is underweight, RBW's tag lists it as a half litra.