Helmet (Spangenhelm) – Byzantine – The Metropolitan Museum of Art https://www.metmuseum.org/art/collection/search/35692
Private collection, Europe (said to have been found in the Caucasus region in the 1920s; by the early 1970s–2010 (per Sotheby’s sale catalogue, p. 102); Arts of the Islamic World sale, Sotheby’s, London, October 6, 2010, no
panels of a third helmet in the group, which was discovered in 1903 in Gammertingen, Baden-Württemberg