Mark with Japanese mark: 薗部芳継 "Sonobe Yoshitsugu" | #433310

薗部芳継 "Sonobe Yoshitsugu". This mark comes from a "fuchi", a sword ferrule in the shape of a cap or ring, and was made by Yoshitsugu. Yoshitsugu worked as a "soukenkinkou" in the Nara line of the Sonobe house. Soukenkinkou is the Japanese name for metalworkers who design accessories for bladed weapons.