Mark with Japanese mark: 國廣作 "Kunihiro saku" | #433577

Mark with Japanese mark: 國廣作 "Kunihiro saku" | #433577
國廣作 "Kunihiro saku". 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 Kunihiro, who worked as a "soukenkinkou". Soukenkinkou is the Japanese name for metalworkers who design accessories for bladed weapons.