Mark with Japanese mark: 興久 "Okihisa" | #433264

興久 "Okihisa". This mark comes from a "fuchi", a sword ferrule in the shape of a cap or ring, and was made by Okihisa. Okihisa worked as a "soukenkinkou" in the Nara line of the Horie house. Soukenkinkou is the Japanese name for metalworkers who design accessories for bladed weapons.