Tachi by Gyosho of Ko-Bizen

This tachi by Gyosho of Ko-Bizen is a representative work of the Ko-Bizen school from the Late Heian period. The Ko-Bizen school was an ancient group of blade smiths from Bizen that shaped the dawn of Japanese swordmaking, with Tomonari, Masatsune, and Kanehira among its renowned makers. Gyosho was particularly highly regarded among Bizen blade smiths of the Late Heian period, and his tachi exerted considerable influence on the aesthetic principles of the later Bizen Ichimonji school. With a blade length of approximately 79 centimeters, it exhibits the characteristics of the transitional period style between the late Heian and early Kamakura periods. It is characterized by an elegant form with deep curvature near the hilt and a dignified hamon based on fine straight suguba. The surface is densely packed with the small itame grain characteristic of Ko-Bizen, imparting an overall sense of ancient elegance throughout. While the circumstances of its transmission to Kyushu are unclear, it is conjectured that it was likely a votive sword dedicated to either Dazaifu or Hakozaki Shrine.