Mark with Japanese mark: 富久 "Tomihisa" | #433335

富久 "Tomihisa". This mark comes from a "kozuka", the hilt of a secondary knife that is often paired with a Japanese sword, and was designed by Tomihisa. Tomihisa worked as a "soukenkinkou" in the Nara line of the Tobari house. Soukenkinkou is the Japanese name for metalworkers who design accessories for bladed weapons.