This turban helmet is inscribed with the name of the sultan Ya'qub of the Aq Quyunlu (White Sheep Turkoman), who ruled from 1478 to 1490.
Inscription: Inscribed: "Glory to our lord the sultan...the greatest khaqan (Turkish for sultan or khan) abu al-Mu'azzam and king...(?)..., kings of the West (?) and the Persians; Sultan,..."
Marking: Stamped with the Constantinople armory mark.
Charles Maurice Camille de Talleyrand-Périgord Duc de Dino, Paris (until 1904, sold to MMA).
New York. The Metropolitan Museum of Art. "The Bright Side of the Battle: Symbol and Ceremony in Islamic Arms and Armor," January 17–September 1, 1985.
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Cosson, Charles Alexander. Le Cabinet d'Armes de Maurice de Talleyrand-Périgord, Duc de Dino. Paris: E. Rouveyre, 1901. p. 112, no. N 6.
Stone, George Cameron. A Glossary of the Construction, Decoration and Use of Arms and Armor in All Countries and in All Times, Together with Some Closely Related Subjects. Portland, Maine, 1934. p. 41, fig. 54, ill.
Alexander, David G. "Two Aspects of Islamic Arms and Armor." Metropolitan Museum Journal 18 pp. 98-99, fig. 2, ill.
Kalus, Ludvik. "Les armures des Timourides, des Aqqoyunlus, et des Shirvanshahs" in Timurid art and culture : Iran and Central Asia in the fifteenth century, edited by Lisa Golombek, and Maria Subtelny. Vol. 6. New York: Leiden, 1992. pp. 161-162, fig. 7, ill.
Roxburgh, David J., ed. Turks: A Journey Through A Thousand Years 600-1600. London: Royal Academy of Arts, 2005. pp. 208-209, 425, cat. no. 155, ill.
Pyhrr, Stuart W. "Armor for America: The Duc de Dino Collection." Metropolitan Museum Journal, (2012), pp. 194-195, fig. 24.
Pyhrr, Stuart W. "Of Arms and Men: Arms and Armor at the Metropolitan, 1912–2012." The Metropolitan Museum of Art Bulletin (Summer 2012), pp. 9–10, fig. 9.
Alexander, David, Stuart W. Pyhrr, and Will Kwiatkowski. Islamic Arms and Armor in the Metropolitan Museum of Art. New York: The Metropolitan Museum of Art, 2015. pp. 72-73, cat. no. 23, ill.