Mark with Japanese mark: 寿延 "Toshinobu" | #433185

寿延 "Toshinobu". 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 Toshinobu, who worked as a "soukenkinkou" in the Nara line of the Tanakatouryuusai house. Soukenkinkou is the Japanese name for the makers of the accessories for bladed weapons.