NihontoWatchBizen Osafune Norimitsu – A Distinguished Master of the Osafune School This beautiful katana has been officially attributed to Bizen Osafune Norimitsu by the Nihon Bijutsu Token Hozon Kyokai (NBTHK), Japan's leading authority on the authentication and preservation of Japanese swords. The NBTHK Hozon certificate specifically identifies the swordsmith as Osafune Norimitsu (長船則光), establishing its attribution to this distinguished lineage of the prestigious Bizen Osafune school. The Osafune school was the largest and one of the most influential swordmaking traditions in Japanese history, producing numerous masterpieces from the Kamakura period onward. The origins of the Norimitsu lineage are traditionally traced to a swordsmith believed to have studied under Nagamitsu, one of the greatest masters of the Kamakura period. However, the name Norimitsu became particularly renowned during the Muromachi period, especially through the fourth-generation master, Gorōzaemon-no-jō Norimitsu, and subsequent generations, including the smiths associated with the Kanshō era. Norimitsu and Sukemitsu were traditionally celebrated as the “Two Great Masters of Eikyō Bizen” (Eikyō Bizen no Sōheki), reflecting their outstanding reputation during the early Muromachi period. Their swords were admired for combining practical effectiveness with the refined beauty characteristic of the Bizen tradition. Beautiful Gunome-Midare Hamon One of the most captivating features of this katana is its beautifully formed gunome-midare hamon, a style particularly associated with the Norimitsu lineage. The temper line consists of gracefully spaced undulating patterns, with distinctive pointed elements that create a lively yet balanced appearance. The nioiguchi, or boundary of the hardened edge, is remarkably bright and clear, beautifully emphasizing the contrast between the hardened steel and the darker surface of the blade. Within the hamon, intricate activities such as sunagashi—fine streaks resembling drifting sand—add depth, movement, and visual complexity. These characteristics reflect the sophisticated forging and tempering techniques developed by the renowned swordsmiths of Bizen Province. The elegant shinogi-zukuri construction and graceful curvature further enhance the sword's classical appearance, embodying the refined aesthetics of Japanese swordmaking during the Muromachi period. Elegant Traditional Japanese Koshirae This katana is accompanied by an attractive traditional Japanese mounting (koshirae), featuring a lustrous black-lacquered scabbard and a finely wrapped black handle. The iron tsuba displays an elegant openwork design with delicate decorative details, while the surrounding metal fittings complement the mounting's restrained and sophisticated appearance. The harmonious combination of black lacquer, traditional metalwork, and carefully arranged decorative elements makes this sword particularly appealing as a complete collector's piece. NBTHK Hozon Certification – Official Attribution to Osafune Norimitsu This katana is accompanied by an authentic Hozon Tōken Certificate issued by the Nihon Bijutsu Token Hozon Kyokai (NBTHK). Importantly, the certificate explicitly records the attribution “Osafune Norimitsu” (長船則光) following the surviving portion of the original signature, “Bishū” (備州). Although part of the original inscription was lost when the tang was shortened, the NBTHK has examined the blade and formally attributed it to Osafune Norimitsu. This is therefore an official NBTHK attribution, rather than an assumption based solely on the blade's appearance or the seller's opinion. Dating to the early to middle Muromachi period, approximately 500–600 years ago, this katana represents the remarkable swordmaking heritage of Bizen Province during an important era in Japanese history. With its beautiful gunome-midare hamon, officially recognized Osafune Norimitsu attribution, and elegant traditional mounting, this katana is an attractive acquisition for collectors who appreciate both the artistry and historical significance of authentic Japanese swords. This katana is available for viewing at SAMURAI STORE's showroom in Tokyo, Japan. We welcome collectors to arrange a private appointment to examine the blade and appreciate its craftsmanship in person. The blade comes with a Certificate of NBTHK Japan Sword Preservation Society - Hozon Paper (Well-preserved sword)
Offered by Samurai Store
As written by the shop
Bizen-den · Bizen · around 1394-1428
1 piece on the market now
This entry for Osafune Norimitsu of the Oei era rests on a tanto signed Bishu Osafune Norimitsu and dated Oei 33 (1426), second month, designated Juyo Token at the 37th session in 1991. The published sources observe that the Norimitsu blades usually encountered date from between Oei Bizen and Sue-Bizen[[c:1]]. Yet the name goes back to the end of the Kamakura period, to a pupil of Nagamitsu whose tanto dated Kagen 3 survives. They then give the meikan sequence: 「銘鑑ではこれを初代として, 二代を延文頃, 三代応永で家助の子とし, 四代が永享頃, 以降室町末期まで名跡の継承があったことを記している」 (the meikan count the Kagen smith as the first generation, place a second around Enbun and a third in Oei as the son of Iesuke, and a fourth around Eikyo, with the name inherited to the end of the Muromachi period).
The tanto matters chiefly as a date. Until it appeared, no work of Norimitsu was known between the Kagen tanto and the Oei era, so its documentary value is held to be very high[[c:2]]. It falls in the Oei era to which the meikan assign the third generation, although the paper itself does not number its maker.
In form the tanto is hira-zukuri with an iori-mune, long for its width and thick, which the published sources call characteristic of Oei Bizen. The ko-itame is tight, with fine ji-nie thickly attached, chikei, and a straight utsuri along the edge. The hamon is a chu-suguha with a shallow notare feeling, ko-nie and a bright nioiguchi, and the boshi runs straight to a ko-maru. Gomabashi are carved on the omote and a koshi-bi on the ura. The paper sums it up as an elegantly tempered suguha of excellent workmanship overall[[c:3]].
A second blade, a tachi signed with the two characters Norimitsu, was designated Juyo Token at the 26th session in 1979. It is undated, and its paper names no generation; it is placed with this entry by default. The paper repeats that the first Norimitsu is said to have been a pupil of Nagamitsu, and that the line lapsed partway and was revived in the Muromachi period[[c:4]].
The tachi is shortened yet keeps a high sori, a fairly wide body and a thick kasane. Its itame is tight with utsuri. The hamon is a showy midare of choji mixed with gunome, nioi-dominant with ko-nie, and the boshi runs in and turns back with a ko-maru feeling. The published sources call it bright work in the Oei Bizen manner and one of the finest among Norimitsu blades[[c:5]].
Where Norimitsu stands among comparable artisans: across all of nihontō, and within tradition, era, and period. The tiers (Foremost · Leading · Major · Notable) weigh official designations from the NBTHK and Japan's Agency for Cultural Affairs, together with historical honors of lasting repute such as the Sansaku and Meibutsu-chō.
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Bizen-den · Bizen
Phase: Ōei-Bizen応永備前· 1390–1441
183 pieces on the market now
The Oei-Bizen and Eikyo-Bizen smiths represent the resurgence of the Osafune school in Bizen Province during the early Muromachi period, an era in which a conscious revival of Kamakura-period aesthetics transformed the character of Bizen swordmaking after the bold, expansive forms of the Nanbokucho period. The school's foremost representatives are Yasumitsu and Morimitsu, described by the NBTHK as the "twin pillars" of Oei-Bizen, both active around the Oei era (1394--1428). Morimitsu is held by one tradition to have been the son of Moromitsu, a representative smith of the late Nanbokucho ko-zori group, and his earliest dated works bridge the transitional character of his father's generation and the fully developed Oei-Bizen idiom. The name Yasumitsu was successively inherited through as many as five generations, while the succeeding Eikyo-Bizen phase -- centered on the fourth-generation Norimitsu and his contemporary Sukemitsu -- carried the tradition forward into the mid-Muromachi period. Related smiths such as Tsuneie of the Hatakeda branch worked in a manner so closely aligned with Osafune production that the NBTHK observes there are "no grounds -- whether in workmanship, the character of the signature, or any other point" by which their work could be distinguished from the main line. Within the Oei-Bizen manner, two principal modes of tempering are recognized. " In both modes the school's identity is revealed through shared forging characteristics: itame-hada mixed with mokume in which the grain stands out conspicuously, with dark lines resembling chikei entering the jihada and midare-utsuri or bo-utsuri standing prominently in the ground. " The boshi assumes the idiosyncratic form popularly termed the "candlewick" (rosoku no shin), becoming pointed at the tip -- a diagnostic hallmark of the school.
A further point of connoisseurship is the finishing of bo-hi with rounded ends (maru-dome) above the machi. The transition from Oei-Bizen to Eikyo-Bizen is marked by Norimitsu's development of a somewhat intermediary character, retaining the koshi-biraki gunome and bright nioiguchi of the earlier masters while introducing tighter grain and elements that point toward the eventual Sue-Bizen style. Moromitsu's earlier production establishes the bridge from the opposite direction, his ko-zori period works showing "signs foreshadowing the style of Oei-Bizen" in their more flamboyant midare passages. The ideal pursued by the Oei-Bizen and Eikyo-Bizen smiths "appears to have been a revival of the Kamakura period," visible in their elegant tachi proportions and in the deliberate re-creation of choji tempering that had fallen out of favour during the Nanbokucho period. Yet the NBTHK consistently emphasizes that the school's own distinctive character is always discernible beneath this revivalist surface. " Both masters' works are consistently described as kenzen -- sound and well-preserved -- with a jigane of superior quality possessing an urumi richness. The school's influence pervaded early Muromachi sword production, and the Eikyo-Bizen continuation through Norimitsu ensured that the Osafune tradition maintained vitality and refinement well into the fifteenth century. Whether in the commanding vigour of the large-pattern choji-midare or in the quiet classical elegance of the suguha mode, the Oei-Bizen and Eikyo-Bizen smiths collectively represent one of the most accomplished chapters in the long history of Bizen swordsmithing. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Mitsutada光忠 | 1238-1239 | 60 |
| Nagamitsu長光 | 1274-1304 | 254 |
| Kagemitsu景光 | 1303-1336 | 142 |
| Sanenaga眞長 | 1299-1309 | 68 |
| Kanemitsu兼光 | 1323-1370 | 235 |
Bizen in the Muromachi period
In the Muromachi period Osafune ran a two-tier trade: kazuuchimono bundle swords for the ranks, and chūmon-uchi custom orders bearing the patron’s personal name in the inscription. The best late Sukesada work stands with anything the school ever made.
Certifies a genuine blade worth preserving: a signature confirmed correct, or, if unsigned, an era, province, and school that the NBTHK can reliably identify.
The NBTHK (Nihon Bijutsu Tōken Hozon Kyōkai, the Society for the Preservation of Japanese Art Swords) is a public-interest incorporated foundation founded in 1948 and supervised by Japan’s Agency for Cultural Affairs (Bunkachō); it is based at the Japanese Sword Museum in Tokyo. Its expert panels physically examine each submitted work (shinsa) and issue a certificate (kanteishō) ranking it by artistic and historical merit. NBTHK papers are the most widely recognized standard of authentication for Japanese swords and fittings.
NBTHK official siteReturns accepted only for errors/damage: damaged or incorrect items reported by email within 10 calendar days; defective goods within 30 calendar days.
¥1,190,000