Mark with Japanese mark: 寶庵齋　壽明 "Houansai | #433177

寶庵齋　壽明 "Houansai Toshiaki". 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 Toshiaki, 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.