Yoshikuni is a Smith of the Yamato Senjuin school of Smiths. His peak period was around the late Kamakura period to early Nambokucho period 1303 to 1343.
The Senjuin school is the oldesd of the five schools in the Yamato tradition. Beginning in the Heian period thru to the Nambokucho period, those Smiths who worked from the Heian period to early Kamakura period are known as Ko-Senjuin school and those from the middle Kamakura period are known as Chu-Senjuin.
Kuniyoshi is known as a chu-Senjuin school Smith. Due to the fact that these Smiths were employees of temples or Monasteries, their swords were not signed. However, identification can be made by examination of the workmanship detailed in the sword.
Kuniyoshi's work style for instance is composed of a well balanced curvature. It is cut down to 69.5cm. The Jigane is Itame-Hada well grained with attached Ji-Nie and Utsuri apears on the clear Jigane. The Hamon consists of Ko-Nie Deki Sugu Ha with tiny Ashi. The Boshi is a round shape. The shape of the sword with a Ko-Kissaki has a high & wide Shinogi-Ji with a high Iori-Mune. The swords of this period were more robust due largely to the experience suffered during the earlier Mongol attempt to invade Japan.
The sword has been awarded papers from both NBTHK and the Kurashiki Token museum.
Kamakura era swords of the Yamato tradition are very rare.