These three solid-cast lions are said to have been found together. Certainly they are closely related both in style and technique of manufacture. They likely ornamented a larger object, perhaps a brazier, which was almost certainly made of iron, since fragments of iron plate and several iron rivets remain attached to the bronze lions.
Muscarella, Oscar White. 1974. Ancient Art: The Norbert Schimmel Collection no. 83, Mainz am Rhein: Verlag Philipp von Zabern.
Milleker, Elizabeth J. 1992. "Ancient Art: Gifts from The Norbert Schimmel Collection: Greek and Roman." Bulletin of the Metropolitan Museum of Art, 49(4): p. 62.
von Bothmer, Dietrich, Carlos A. Picón, Joan R. Mertens, and Elizabeth J. Milleker. 1993. "Recent Acquisitions: A Selection 1992–1993: Ancient World." Bulletin of the Metropolitan Museum of Art, 51(2): p. 62.
de Puma, Richard Daniel. 2013. Etruscan Art in the Metropolitan Museum of Art. no. 4.33a, pp. 12, 73, New Haven and London: The Metropolitan Museum of Art.