Mark with Japanese mark: 渋谷知信 "Shibuya Tomonobu" | #433269

渋谷知信 "Shibuya Tomonobu". This mark comes from a "menuki", decorative ornaments that are found in the binding of a sword and used to help with grip. It was designed by Tomonobu, who worked as a "soukenkinkou" in the Nara line of the Shibuya house. Soukenkinkou is the Japanese name for the makers of the accessories for bladed weapons.