Tachi (inscribed with Norikuni)

Tachi Signed "Norikuni": A Rare Survivor from Kyoto's Awataguchi School

Only a small number of swords in the world carry the authenticated signature of the smith Norikuni, and one of them rests in the collection of the Kyoto National Museum. This single-edged curved long sword, or tachi, was forged in the thirteenth century during the Kamakura period. Its cutting edge measures 74.7 centimeters, and near the end of the tang two carved characters read "Norikuni." For most of its life the blade belonged to the Ikeda family, the lords who governed the Tottori domain in what is now Tottori Prefecture.

Norikuni worked within the Awataguchi school, a group of smiths named after the district at the eastern gateway into Kyoto where they kept their forges from the late Heian into the Kamakura period. He was the son of Kunitomo, one of the figures credited with founding the school and one of the smiths called to work in rotation for Retired Emperor Go-Toba, an honored circle known as the goban kaji. Within that lineage Norikuni is usually placed at the head of the generation that followed the celebrated founding brothers.

Why It Became a National Treasure

The sword was first listed as an Important Cultural Property on January 30, 1934, and was raised to the rank of National Treasure on March 20, 1954. Two qualities account for that standing. The first is scarcity. Blades that can be confidently attributed to Norikuni by his own signature are remarkably few, and the surviving signatures differ slightly from one another. This example and a tachi held at Atsuta Shrine in Nagoya are counted among the rare signed works.

The second is the workmanship itself. Although the blade was shortened at some point in its history, a process called suriage that trimmed the tang to make the sword easier to wield, it kept a balanced and graceful line. The original blade is thought to have approached three shaku, close to ninety centimeters. Specialists describe the steel as densely worked and refined, and the temper line as a clear, composed pattern of high quality. Taken together, the piece is regarded as a model of what the Awataguchi tradition could achieve.

What to Look for in the Blade

A Japanese sword rewards slow looking, and three features repay the most attention here. Begin with the surface of the steel, the jihada. Norikuni's forging shows a tight wood-grain pattern called ko-itame that reads as a pale, almost milky sheen across the flat of the blade. That whitish appearance is the trace of many careful folds of the metal, and it is one of the hallmarks of swords made in the capital.

Next comes the temper line, the hamon, where the hardened edge meets the softer body of the blade. Norikuni chose a narrow straight pattern, hoso-suguha, that bends only gently along its length. Bright crystalline particles called nie gather thickly along it, and fine bright streaks known as kinsuji run through the hardened zone.

Finally there is the silhouette. The blade is slender, the point is small, and the curve sits low toward the hilt. These are the marks of an early Kamakura sword, and even after the shortening the proportions hold together without strain. Standing in front of the case, it helps to step back once to take in the whole shape, then lean close to read the grain and the temper line.

Around the Museum

The Kyoto National Museum sits in the Higashiyama district on the eastern side of the city, an area dense with places worth a visit. Directly across the street stands Sanjusangen-do, the long wooden hall lined with a thousand standing figures of Kannon. A short distance uphill lies Kiyomizu-dera, with its wide veranda over the slope, and the lanes of the old Higashiyama quarter lead toward Gion.

One practical note matters for any sword. National Treasure blades are fragile and light-sensitive, so they appear only during selected periods rather than year-round. Anyone hoping to see this tachi in person should check the museum's current exhibition schedule before traveling. When the sword is not on view, high-resolution images can be studied through ColBase, the online collection database shared by Japan's national museums.