Watch List notes:

Matienus. Ca. 179-170 B.C. AR denarius (18.1 mm, 3.29 g, 2 h). Rome mint. Helmeted head of Roma right, X behind / ROMA within linear square, the Dioscuri riding right, holding spears; MAT monogram below horses. Crawford 162/2a; Sydenham 320; RSC Matiena 2. aVF, toned. 

Ex RBW collection (not in previous sales).