It has chiseled mark like straw matt on its head, there are fan shape frame above and under the Kiri-mon (paulownia patterns), hallmark of 'Ichiryo' on upper part of the center and of Mitsutsugu (Kao ［written seal mark］) on lower part, Kao (written seal mark) on the center of the tail, test hallmark of Kobanshi (a Koban master) on the right or left part of lower part, and test hallmark of Fukisyo (in where Koban were casted).
表面には鏨（たがね）による茣蓙目が刻まれ、上下に桐紋を囲む扇枠、中央上部に「壹两」下部に「光次（花押）」の極印、裏面は中央に花押、下部の右ないし左端に小判師の験極印、さらに吹所の験極印が打印されている。