unsigned attributed a work of Touryusai
Round rectangular shape, Iron ground, Hammered surface, Sukidashi-Takabori carving, Gold/Shakudo/Yamagane copper Iroe inlay, Gold Fukurin rim, Double Hitsu-ana punches (filled with Gold)
86.7mm x 80.2mm 5.5mm thick (Mimi) / 3.7mm thick (Seppa-dai)
NBTHK(Hozon) certificate