Aes Premonetale. Aes Formatum. AE solid cast cockle-shell, Central Italy, 6th-4th century BC. . Vecchi ICC pl. 90,5; cf. G. Fallani, IANP Publication 8, 1986. pl. 6, 2-2c. 31.12 g. 31 mm. Green patina, with brown spots. VF.