Mark with Japanese Mark: 仙台住　秀富 "Sendai ju | #457997

仙台住　秀富 "Sendai ju Hidetoshi". This mark is from a fuchi and was made by Hidetoshi, who worked as a sword engraver (soukenkinkou) in Mutsu Province (present-day Fukushima Prefecture). Soukenkinkou is the Japanese name for metalworkers who design accessories for bladed weapons. A fuchi is a ferrule that is placed between the tsuba and a sword's hilt.