Mark with Japanese mark: 寶殊齋　政景 "Houjusai | #433169

寶殊齋　政景 "Houjusai Masakage". 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 Masakage, who worked as a "soukenkinkou" in the Nara line of the Tanakatouryuusai house. Soukenkinkou is the Japanese name for metalworkers who design accessories for bladed weapons.