One theory claims it to have been crafted during the late 7th/early 8th century in Japan as it is made from the wood of the camphor trees that are not found on the Korean Peninsula, however, there is another theory.
朝鮮半島には現存しないクスノキ材製であるところから、7世紀末～8世紀初頭頃の日本製と見られるが異説もある。