Mark with Japanese Mark: 仙台住　清忠 "Sendai ju | #457996

仙台住　清忠 "Sendai ju Kiyotada". This mark is from a fuchi and was made by Kiyotada, 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.