The trefoil oinochoe, with three-lobed mouth, is a basic shape in both Etruscan and Greek pottery. This example, with its virtuosic carination, is an Etruscan variant. The neck resembles those of some Nicosthenic neck-amphorae.
de Puma, Richard Daniel. 2013. Etruscan Art in the Metropolitan Museum of Art. no. 4.75b, pp. 97-8, New Haven and London: The Metropolitan Museum of Art.