Watch List notes:

Matienus. AR Denarius, uncertain Spanish mint, 179-170 BC. Obv. Helmeted head of Roma right; behind, X. Rev. The Dioscuri galloping right; below horses, MAT ligate; in linear frame, ROMA. Cr. 162/2a. AR. 3.94 g. 18.00 mm. Brilliant and nicely toned, with reddish highlights. Minor metal flaw on edge. Good VF.