Mark with Japanese mark: 江府住 宜秀 "Koufu ju | #433570

江府住 宜秀 "Koufu ju Yoshihide". 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 Yoshihide, who worked as a "soukenkinkou". Soukenkinkou is the Japanese name for metalworkers who design accessories for bladed weapons.