Antique Japanese Katana by Shitahara Teruhiro with Suguha Hamon, Iron Openwork Tsuba and Shirasaya - NBTHK Hozon

• Signature (Mei): 武州下原住照広 (Bushu Shitahara ju Teruhiro) · omote only, the ura left unsigned
• Swordsmith: Teruhiro 照広, resident of Shitahara in Musashi Province
• School / Tradition: Shitahara 下原 school, the smiths of Hachioji
• Period / Province: Edo period · Musashi Province (present-day Tokyo)
• Certificate: NBTHK Hozon Token no. 367129, issued 31 March 2004
• Mounting: Complete katana koshirae with black lacquered saya, iron openwork tsuba and gilt menuki · supplied with a fitted shirasaya
• Blade Length (Nagasa): 67.5 cm (2 shaku 2 sun 3 bu, as recorded on the NBTHK certificate)
• Curvature (Sori): 0.8 cm
• Mekugi-ana: 2
• Shape (Sugata): Shinogi-zukuri, iori-mune, chu-kissaki, shallow curvature
• Jihada: Itame mixed with mokume, standing clearly, with ji-nie and the swirling ring-like figure associated with Shitahara steel
• Hamon: Suguha-cho with gentle undulations, nioi-deki with ko-nie and fine sunagashi along the habuchi
• Boshi: Suguha with a ko-maru turnback
• Habaki: Single-piece copper

This katana is signed 武州下原住照広 on the omote of the nakago: Teruhiro, resident of Shitahara in Bushu, the province of Musashi that today covers Tokyo and its western valleys. The blade was submitted to the NBTHK and papered Hozon Token under certificate no. 367129 on 31 March 2004, the signature accepted as cut and recorded exactly as it reads. It is registered in Japan under torokusho Hokkaido no. 36888 of 25 May 2000, and is accompanied by both its koshirae and a fitted shirasaya.

The nagasa is 67.5 cm (2 shaku 2 sun 3 bu) for only 0.8 cm of sori, a proportion that places the sword firmly in the Edo period rather than in the deeply curved sword-making of the preceding centuries. It is shinogi-zukuri with an iori-mune and a compact chu-kissaki: a short, nearly straight, thick-spined fighting blade, built for the indoor distances and the daily wear of a townsman-era samurai, not for the battlefield sweep of a tachi. The nakago carries two mekugi-ana, the mark of a sword that was remounted at least once during its working life.

The hamon runs as suguha-cho, a straight temper line that breathes rather than holds rigid: it rises and falls in slow undulations along the length of the ha, tempered in nioi-deki with a scattering of ko-nie. Fine sunagashi streak through the habuchi where the quench caught the grain, and the line carries into the kissaki to turn back as a tidy ko-maru boshi. The nioiguchi is soft-edged and slightly subdued, which is exactly how Shitahara blades read: this school tempered for toughness, not for theatre.

The ji is where this blade declares its origin. The jihada stands up openly across the whole surface, itame shot through with mokume, the grain curling into concentric rings and whorls under a generous scattering of ji-nie and chikei. Japanese connoisseurs call this figure nyorin-moku, ring-grain, and it is the single most reliable identifier of Shitahara work: no other Kanto school produced a surface that reads quite like it. On this katana it is visible along the entire blade in ordinary light, with no need for a raking lamp.

The blade is in honest, well-preserved condition, polished so that both the ring-grain and the habuchi are legible. The nakago retains a settled dark patina with the signature still cleanly readable, the yasurime and the kiri nakago-jiri intact. This is a papered, signed, unaltered-length Edo sword with its original working character still on the surface.

Koshirae Details

The saya is finished in plain black lacquer, high-gloss and unbroken by decoration, with the small chips and surface scratches of genuine period wear rather than the flat uniformity of a modern refinish. A braided tan sageo is tied at the kurikata, its colour deliberately set against the black: this is the restrained scheme a working retainer would have carried, not a display mounting.

The tsuba is iron, round, and worked in bold sukashi: a leafy vine cut on one side and a blossom enclosed in a broken ring on the other, framed by a heavy raised rim. The plate shows the dark forged surface and pitting of an aged iron guard, with copper sekigane fitted into the nakago-ana to seat it precisely on this blade. It is unsigned, as the great majority of provincial iron guards of this type are.

The fuchi is dark, finely granulated in nanako and bordered by a gilt fukurin, the one clear touch of gold on the hilt; the kashira answers it in plain black horn. Two pairs of copper seppa complete the assembly, and the blade seats in a single-piece copper habaki, unadorned and file-finished.

The tsuka is bound in black silk ito over white same in hineri-maki, each turn twisted at the diamond so the nodules of the ray skin show through cleanly. Beneath the wrap sit gilt copper menuki modelled in high relief as lion-dogs among foliage, the gilding worn back to the copper on the raised points where generations of hands closed on the grip. The wrap is tight and complete, with no slack or replacement sections.

The sword also comes with a plain shirasaya in white wood with its own copper habaki collar, so the blade can be stored out of its lacquered mounting: the standard and correct way to keep a Japanese sword long-term without trapping moisture against the steel.

The Swordsmith: Teruhiro 照広

Teruhiro signed himself 武州下原住照広, resident of Shitahara in Bushu, the standard formula of the Shitahara smiths and the one the NBTHK accepted on this blade. He is recorded as a Shitahara smith of the late Momoyama to Edo period; unlike the school's headline names, he is not the subject of a detailed published genealogy, and we make no claim about a specific generation or master.

The name itself is informative. The Shitahara lineage is built on two characters: 照 teru, granted to the smith Terushige by Hojo Ujiteru, lord of Hachioji Castle, and 広 hiro, carried by the Hiroshige line that became the school's most celebrated branch in the Edo period. A smith signing Teruhiro is writing both of those inheritances into his own name, which is how the Shitahara workshops recorded descent and affiliation in an era with no other register.

What the blade says about him is more useful than any list of dates. He worked the school's signature steel openly rather than hiding it under a tight surface, tempered a controlled suguha-cho instead of a flashy midare, and finished a sword of practical length and shallow curvature. That is the profile of a Shitahara smith working for customers who intended to wear the sword.

The Shitahara Smiths of Hachioji

The Shitahara school 下原鍛冶 took shape in the Daiei era of the late Muromachi period around what is now Hachioji, in the western reaches of Tokyo. Tradition credits its founding to Chikashige 周重; his son Yasushige 康重 received the character 康 from Hojo Ujiyasu of Odawara, and Yasushige's brother Terushige 照重 received 照 from Hojo Ujiteru of Hachioji Castle. Those grants tie the school directly to the Later Hojo, the clan that ruled the Kanto until Hideyoshi broke them in 1590.

The fall of the Hojo did not end the school. The Shitahara smiths, most of whom bore the family name Yamamoto, passed into the service of the Tokugawa and went on forging swords and polearms for the shogunate through the Edo period and into the Meiji era. The third-generation Hiroshige 広重, active around the Kanbun era, is the best-known of them and forged a ceremonial jin-dachi for Tokugawa Mitsukuni of Mito.

Shitahara blades were valued for cutting, not for court display, and their reputation rests on two things: a hard, tough steel, and the unmistakable ring-grain jihada that came out of the way these smiths folded it. Collectors of Kanto work seek out that surface specifically, because it cannot be convincingly imitated by any other tradition.

What is offered here is a signed Shitahara katana, papered NBTHK Hozon, with the school's diagnostic ring-grain visible along the full length of the blade, a quiet suguha-cho temper, a complete period koshirae with iron openwork tsuba and gilt menuki, and a fitted shirasaya for storage: a Tokyo sword, by a Tokyo school, still complete in the form a samurai of Musashi would have worn it.