Mark with Japanese mark: 宮田信清 "Miyata Nobukiyo" | #433346

宮田信清 "Miyata Nobukiyo". 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 Nobukiyo, who worked as a "soukenkinkou" in the Nara line of the Miyata house. Soukenkinkou is the Japanese name for metalworkers who design accessories for bladed weapons.