Watch List notes:

Anonymous [Butterfly and Vine-branch]. Ca. 169-158 B.C. AE triens (21.5 mm, 8.24 g, 9 h). Rome mint. Helmeted head of Minerva right, four pellets above / ROMA in exergue, prow of galley right; above, butterfly on vine-branch above; four pellets to right. Crawford 184/3; Sydenham 296b. Fine. Very Rare. 

Ex RBW collection (not in previous sales); Baldwins 7, 5/2/96, lot 264 (sold for $286).