Tachi Signed Unshō
太刀 銘 雲生
Also known as: With black-lacquered scabbard koshirae; tachi by the founder of the Bizen Ukai (Unrui) school
Description
Unshō, Founder of the Ukai School
Unshō was a swordsmith of the late Kamakura period who lived at Ukai in Bizen Province (around present-day Mitsu, Kita Ward, Okayama City). He was followed by Unjū and Unji, smiths who likewise took the character "un" (cloud) in their names, and the group is accordingly known as the Unrui — the "cloud group" — or the Ukai school. Although based in Bizen, the school is distinguished by a style closer to the Aoe school of neighbouring Bitchū than to the dominant Osafune school.
Style
This blade has a cutting edge of 68.2 cm and a curvature of 2.0 cm. Slender in form with shallow curvature, it is forged in a densely packed ko-itame hada, and the hamon is based on suguha with gunome and nijūba mixed in. That a Bizen blade should display such refined workmanship, close to the Yamashiro (Kyoto) manner, captures precisely what sets the Unrui apart. A black-lacquered scabbard koshirae is included in the designation.
Significance and Designation
Though never as numerous as the Osafune smiths, the Unrui held an important place in Bizen from the late Kamakura into the Nanboku-chō period. As a signed work by the school's founder, this tachi serves as a benchmark for verifying its style. It is designated an Important Cultural Property in the crafts category and is held by the Kyoto National Museum.
Legends & Stories
Unshō, Unjū and Unji — smiths who each carried the character "un" (cloud) in their names — formed the group known as the Unrui. Though based in Bizen, they were known for a cool, restrained manner recalling the Aoe school or the blades of Kyoto: a quiet aesthetic lineage, in pointed contrast to the flamboyant chōji-midare of Osafune.