Mark with Japanese Mark: 遊洛斎　赤文 "Yuurakusai | #458151

遊洛斎　赤文 "Yuurakusai Sekibun". This mark is from a kozuka, which is the hilt of a small, secondary knife. It was made by Sekibun, who worked as a sword engraver (soukenkinkou) in Dewa Province (present-day Yamagata Prefecture). Soukenkinkou is the Japanese name for metalworkers who design accessories for bladed weapons.