Edo period (1615-1868), 17th century The helmet bowl a three plate zunari kabuto, applied with a superstructure in lacquer, wood and paper in the form of a handscroll, the surface finished in glossy roiro-nuri, the five-lame shikoro lacquered silver and laced in purple With Tokubetsu Kicho Shiryo (Especially Important Material) certificate no. 1701 issued by the Nihon Katchu Bugu Kenkyu Hozon Kai (Society for the Study and Preservation of Japanese Armor), dated October 21, 2018 10 1/8in (25.7cm) high, the helmet only