Armor of the dōmaru type (dōmaru tōsei gusoku)
Helmet by Bamen Tomonori; half mask by Myōchin Ki no Muneō
Edo period, mid-16th century (armor); mid-17th century (helmet); late 19th century (half mask)
Iron, lacquer, leather, gold, bronze, horsehair, fur
62 x 32 x 27 in. (157.48 x 81.28 x 68.58 cm)

Dōmaru—“body wrapping”—armor features chest armor made from a single piece (as opposed to having multiple, adjoined sections) that is laced up on the right-hand side. This striking armor bears the heraldic cherry-blossom crest of the Arima daimyo family of the province of Echizen (modern-day Fukui prefecture). It appears several times on the suit: on the black lacquered iron hand protectors, chain mail sleeves, helmet (in bronze), protective skirt, and chest plate. The symbol is also sewn in gold thread on the sumptuous green silk thigh protection (haidate) and shin guards. An elegant ornamental lion with golden eyes and claws adorns the front of the signed helmet.

http://samurai.kimbellart.org/exhibit/armor-in-times-of-peace/armor-d%C5%8Dmaru-type-d%C5%8Dmaru-t%C5%8Dsei-gusoku