ORC1501 Large Aes Grave, Janus / Prow VF Anonymous, Æ as, (c. 255g) Aes Grave As, c. 240-225 BC. Head of Janus, I above. / Prow right. Thurlow-Vecchi 51; Crawford 35/1; Haeberlin pl. 12-13; BMCRR (Rome) 1. VF, heavy but original green patina. The early cast Roman bronzes weighed nearly 12 uncia, a full Roman pound. An interesting paper-weight sized coin.