Mark with Japanese Mark: 応松木君需　水府住　生涼軒勝平 | #458356

応松木君需　水府住　生涼軒勝平 "Matsukikun motome kotaeru Suifu ju Seiryouken Katsuhira". This mark is from a tsuba and was made by Katsuhira, who worked as a sword engraver (soukenkinkou) in Hitachi Province (present-day Ibaraki Prefecture). Soukenkinkou is the Japanese name for metalworkers who design accessories for bladed weapons. A tsuba is a sword guard designed to protect the hand from contact with the blade. It also balances the weight of the sword.