Unknown Turkish, ‘Helmet with Aventail’, late 15th–16th century, The Metropolitan Museum of Art

Turkish, in the style of Turkman armor; H. including mail 22 in. (55.9 cm); H. excluding mail 13 5/8 in. (34.6 cm); Wt. including mail 7 lb. 6.2 oz. (3350.9 g); Wt. excluding mail 3 lb. 9 oz. (1616 g)
http://www.metmuseum.org/art/collection/search/24813

Image rights: The Metropolitan Museum of Art (Purchase, Anonymous Gift, 1950), licensed under CC0 1.0 Universal