Mark with Japanese mark: 安政丁巳初秋　雙龍軒義則 "Ansei | #433542

安政丁巳初秋　雙龍軒義則 "Ansei hinotomi shoshu Souryuuken Yoshinori". 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 Yoshinori, who worked as a "soukenkinkou" in the Nara line of the Seki house. Soukenkinkou is the Japanese name for metalworkers who design accessories for bladed weapons.