This Yoroi has a Koshu Tokubetsu Kicho Shiryo Paper, the second highest certificate issued by The Association for the Research and Preservation of Japanese Helmets and Armor. According to the certificate, the period is considered to be the late-Edo period.

It is made in the most labor-intensive and exclusive form called Honkozane, where each Kozane is individually woven. The edges of each piece are covered with Fukuri. Each parts have good metal parts.. The cloth of each part remains the same as the original. The Kabuto and Gyoyo have Kiri-mon, which is the family crest of high rank. Considering the overall construction, this armor was worn by a warlord of fairly high rank.