Watch List notes:

M. Atilius Serranus, As, Rome, 148 BC; AE (g 21,97; mm 31; h 4); Laureate head of Janus; above, I, Rv. Prow r.; above, M ATILI; before, I; below, [ROMA]. Crawford 214/2a; Atilia 10; Sydenham 399.
Green patina, good very fine.