unsigned attributed a work of Mito
AOI Mokko cross rectangular shape, Iron ground, Hammered surface, Takabori carving, Gold/Shakudo/Yamagane copper Iroe inlay, Shakudo Fukurin rim, Single Hitsu-ana punch (filled with Shakudo)
88.2mm x 87.2mm 4.3mm thick (Mimi) / 4.1mm thick (Seppa-dai)
NBTHK(Hozon) certificate