Rostrum tridens series. AE As, c. 206-195 BC. Obv. Laureate head of Janus; above, mark of value I. Rev. Prow right; above, rostrum tridens left and mark of value I; below, ROMA. Cr. 114/2. 31.53 g. 34 mm. Brown patina, green spots. About VF/VF.