Watch List notes:

Anonymous [Thunderbolt]. Ca. 206-195 B.C. AR denarius (18.8 mm, 3.78 g, 11 h). Rome mint. Helmeted head of Roma right, X behind / ROMA, the Dioscuri on horseback riding right, each holding spear; star above each; thunderbolt below. Crawford 119/2; Sydenham 246; RSC 20hh. Toned aVF. Very Rare. 

Ex RBW collection (not in previous sales).