Mark with Japanese mark: 無等齋　安家 "Mutousai | #433568

Mark with Japanese mark: 無等齋　安家 "Mutousai | #433568
無等齋　安家 "Mutousai Yasuyuki". 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 Yasuyuki, who worked as a "soukenkinkou". Soukenkinkou is the Japanese name for metalworkers who design accessories for bladed weapons.