Watch List notes:

Aes Premonetale. Aes Formatum. AE cast square item, central Italy, 6th-4th century BC. Obv. Large X in high relief. Rev. Blank. Unlisted in the standard references and apparently unpublished; Vecchi ICC- (cf."Bronze objects found with Aes Rude and early currency bars in Central Italy", p. 76 and pl. 90). AE. 8.94 g. 20.00 mm. RRR. Extremely rare and intriguing. Lovely earthen emerald green patina. Good VF.