Watch List notes:

C. Antestius. 146 B.C. AR denarius (18.1 mm, 3.31 g, 6 h). Rome mint. C · ANTESTI behind, helmeted head of Roma right; X below chin / ROMA, the Dioscuri riding right; below, dog running right. Crawford 219/1e; Sydenham 411; RSC Antestia 1. aFine, toned, rough. 

Ex RBW collection (not in previous sales).