About 23hoki
This sword could have been the operate of any one of those Ko-Hôki smiths. Samples of the function of all of them are extant these days. Typical details in their workmanship can be a coarse mokume-hada, a jigane that appears darkish, along with the existence of the two ji-nie and chikei. The hamon is ko-midare, consisting of the nie construction w