Mark with Japanese mark: 月人子富随 "Tsukihitone | #433339

月人子富随 "Tsukihitone Tomiyuki". This mark comes from a "tsuba", a sword guard designed to protect the hand from contact with the blade and an opposing sword. It was made by Tomiyuki, who worked as a "soukenkinkou" in the Nara line of the Saitou house. Soukenkinkou is the Japanese name for metalworkers who design accessories for bladed weapons.