Watch List notes:

Aes Premonetale. Aes formatum. Cocoon-shaped AE solid cast Aes Formatum, Central Italy, 6th-4th century BC. Unlisted in the standard references; Vecchi ICC- (cf.'Bronze objects found with Aes Rude and early currency bars in Central Italy', p. 76 and pl. 90). AE. RRR. g. 18.71; mm. 44. Extremely rare, about the 5th specimen known. Uneven olive green and turquoise patina.

For the depiction of a cocoon on a cast Uncia, cf. Vecchi ICC 312.