Bronze bell No. 1 from the Kamo-Iwakura site

National treasure. It was made from the same mold as bronze bell No.26 from the Kamo-Iwakura site. In the center of the handle, the mark 'X' has been inscribed by a tool with a sharp cutting edge. The dotaku unearthed from the Kamo Iwakura site have a nested structure. In this way, No.4 dotaku was set into this dotaku.