This kimono, in black plain-weave habutae silk fabric, was worn by Sakamoto Ryoma. For generations, it had belonged to the Iguchi family, owners of Omiya (a soy-sauce shop and inn) in Kyoto, where Ryoma often stayed and was assassinated. It was donated to the museum by the Iguchi family in 1940. The Sakamoto family's crest is on it. From the size of the kimono, we can guess Ryoma's body type.