Sword Guard (Tsuba), late 16th or early 17th century
Japanese, late Muromachi (1392–1573)–early Edo period (1615–1868)
Iron, copper; H. 2 7/8 in. (7.3 cm); W. 2 3/4 in. (7 cm); thickness 3/16 in. (0.5 cm); Wt. 2.3 oz. (65.2 g)
The Metropolitan Museum of Art, New York, The Howard Mansfield Collection, Gift of Howard Mansfield, 1936 (36.120.195)
http://www.metmuseum.org/Collections/search-the-collections/29997