From the bronze swords with remnants of what appear to be scabbards excavated in the Yayoi section, there seems to have been some kind of sword mounting culture in the Yayoi period, but details are unknown.
弥生時代の出土品に、鞘らしきものの痕跡をとどめる青銅剣があることから、既に何らかの刀剣外装の文化があったと思われるが詳細は不明。