Metal vases are far more rare than their ceramic counterparts because fewer were made and because the metal deteriorated or was melted down. Only about half a dozen complete bronze neck-amphorae are known. The side handles served for pouring, the swinging bail for lifting and carrying. The embellishment here is particularly masterful—not only the Gorgon's heads beneath the handles but also the beading, tongues, and lotos buds on the foot, lip, and handles.
von Bothmer, Dietrich. 1961. "Newly Acquired Bronzes–Greek, Etruscan, and Roman." Bulletin of the Metropolitan Museum of Art, 19(5): pp. 140–41, 144, figs. 10–12.
Mertens, Joan R. 1985. "Greek Bronzes in the Metropolitan Museum of Art." Bulletin of the Metropolitan Museum of Art, 43(2): no. 19, pp. 8, 33.
Krauskopf, Ingrid. 1995. "Überlegungen zur zeitlichen Diskrepanz zwi[s]chen Metallgefässen und ihren Nachbildungen in Ton." Vaisselle Métallique, Vaisselle Céramique: Productions, Usage et Valeurs en Étrurie, Revue des études anciennes 97, Jean-René Jannot, ed. pp. 80, 83 n. 34, 85, fig. 2, Bordeaux: Revue des Études Anciennes.
Stibbe, Conrad M. 2000. The Sons of Hephaistos: Aspects of the Archaic Greek bronze Industry. p. 154, Roma: L'Erma di Bretschneider.
Picón, Carlos A. 2007. Art of the Classical World in the Metropolitan Museum of Art: Greece, Cyprus, Etruria, Rome no. 93, pp. 88, 423, New York: The Metropolitan Museum of Art.