This collar plate belongs to a helmet (now in the Musée de l'Armée, Paris) that was made for the future Henry III of France (reigned 1574–89). The grotesque decoration in low relief is similar to that on the armor of Henry II of France also in the Metropolitan Museum's collection (acc. no. 39.121a–n).
Ex. colls.: Prince Radziwill, Nieswicz Castle, Lithuania; Stephen V. Grancsay, Brooklyn.
Pyhrr, Stuart W., Donald J. La Rocca, and Morihiro Ogawa. Arms and Armor: Notable Acquisitions, 1991–2002. New York: The Metropolitan Museum of Art, 2002. p. 13, no. 7, ill.and fig. 3 (detail).