Ordering number : F13718
Yoroi and Kabuto (Large Armor)
Mei (signature): Mumei (unsigned)
Era: Modern times.
Special feature: It is nice work.
The O-Yoroi means large size armor.
The O-Yoroi is a promient example of early Japanese armor worn by the Samurai class of fudal Japan. That started in Heian and Kamakura period.
Aoi-Art estimation paper.