unsigned attributed to KUTSUWA-SHI (Horse bit smith)
KUTSUWA Horse Bit Cross in a AORI-circle openwork, Iron ground, Hammered Tsuchime-ji surface, Nikubori / Kebori carving Well-contoured round Mimi Edge
Momoyama period(end 16th C.)
80.7mm x 80.3mm 5.2mm thick (Mimi)
NBTHK(Tokubetsu Hozon) certificate