One was excavated from Toriibarakitsunezuka Tumulus in Ichikawa Misatocho (former Mitamacho), Nishiyatsushiro district, Yamanashi Prefecture and it has an inscription about counting years of Sekiu Gannen (year 1) Year (in 238).
山梨県西八代郡市川三郷町（旧三珠町）の鳥居原塚古墳出土の赤烏（せきう）元年(238)の紀年銘をもつ。