Mark with Japanese Mark: 海野美盛 "Unno Bisei" | #458419

海野美盛 "Unno Bisei". This mark is from a kozuka, which is the hilt of a small, secondary knife. It was made by Bisei, who worked as a sword engraver (soukenkinkou) in Hitachi Province (present-day Ibaraki Prefecture) for Un'no house. Soukenkinkou is the Japanese name for metalworkers who design accessories for bladed weapons.