Watch List notes:

Matienus. Ca. 179-170 B.C. Æ as (32.8 mm, 20.98 g, 8 h). Uncial standard. Rome mint. Laureate head of bearded Janus; I above / ROMA, Prow of galley right; I to right, MAT monogram above. Crawford 162/3; Sydenham 321a. Fair. 

Ex Goodman collection.