Watch List notes:

Q. Opimius. AE As, c. 169-158 BC. D/ Laureate head of Janus; above, mark of value I. R/ Prow right; above, OPEI; before, mark of value I; below, ROMA. Cr. 190/1. B. 7. AE. g. 38.96 mm. 33.00 RR. An exceptionally over weight example. Lovely brown patina. Good VF.

See, for style, NAC 61, RBW 807.