Tachi, Signed Kunimune: A National Treasure of Japanese Swordsmithing
Among the countless Japanese swords that have survived across the centuries, only a select few have been elevated to the status of National Treasure — Japan's highest cultural designation. The Tachi, signed Kunimune (太刀〈銘国宗〉), housed at the Fukuyama Museum of Art in Hiroshima Prefecture, is one such masterpiece. Forged in the mid-Kamakura period (13th century) by the legendary swordsmith Bizen Saburo Kunimune, this tachi stands as a testament to the extraordinary skill that shaped the history of Japanese sword-making.
Part of the renowned Komatsu Yasuhiro Collection — one of the most significant private sword collections ever assembled in Japan — this blade represents the pinnacle of the Bizen tradition and offers international visitors a rare opportunity to experience a National Treasure sword firsthand, in a museum conveniently located just minutes from JR Fukuyama Station.
Bizen Saburo Kunimune: The Swordsmith Who Bridged Two Great Traditions
Kunimune, commonly known as Bizen Saburo Kunimune (備前三郎国宗), was born in Bizen Province (present-day Okayama Prefecture) as the third son of Kunizane, a swordsmith of the Naomune school — a branch of the prestigious Osafune lineage. His designation "Saburo" (meaning "third son") became inseparable from his identity as a craftsman.
In the mid-13th century, the fifth regent of the Kamakura Shogunate, Hojo Tokiyori, summoned the finest swordsmiths from across Japan to Kamakura in order to strengthen the nation's military capabilities. Kunimune was among those called, alongside Awataguchi Kunitsuna from Yamashiro Province and Sukezane of the Fukuoka Ichimonji school from Bizen. Together, these three master craftsmen laid the foundations of Kamakura-based sword production.
Kunimune's historical significance extends even further: he is believed to have been the teacher — and possibly the father — of Shintogo Kunimitsu, the swordsmith widely regarded as the founder of the Soshu tradition (Soshu-den). This revolutionary school of swordsmithing eventually produced Masamune, arguably the most celebrated swordsmith in Japanese history. Through this lineage, Kunimune's legacy reverberates across centuries of Japanese blade-making.
Unlike many Osafune smiths who took on mass commissions, Kunimune was known for accepting only individual orders, producing each blade with meticulous care. His works range from powerful, broad-bodied tachi to slender, elegant pieces — demonstrating a remarkable breadth of artistic expression.
Why This Tachi Was Designated a National Treasure
Designated as a National Treasure on November 14, 1953, this tachi is officially described in government records as "a masterpiece among works by the same smith, superbly preserved beyond comparison." Several qualities elevate this blade to the highest rank of Japan's cultural properties.
The blade is forged in the shinogi-zukuri style with an iori-mune ridge, a medium-length kissaki (point), and a graceful koshi-zori (curvature centered near the base) — features characteristic of mid-Kamakura period tachi. Despite having been slightly shortened (suriage) by approximately 6 centimeters at some point in its history, the smith's signature "國宗" remains clearly preserved on the tang.
The steel is forged in a tightly packed ko-itame (fine wood-grain) pattern with abundant surface texture, and a beautiful midare-utsuri (irregular shadow pattern) appears in the body of the blade. The hamon (temper line) is a spectacular juka-choji — a layered clove-blossom pattern — with abundant ashi and yo activities, and a bright, tightly defined nioi-guchi (boundary line of the temper pattern).
This tachi displays the quintessential characteristics of the first-generation Kunimune, and among the four National Treasure swords bearing the Kunimune signature, this example is particularly celebrated for its exceptionally vivid and gorgeous hamon. It is widely considered the representative masterwork of the entire Kunimune oeuvre.
Highlights and What to Look For
For first-time viewers of Japanese swords, this National Treasure offers several visually striking features that can be appreciated even without specialized knowledge.
The most immediately captivating element is the juka-choji hamon — a complex, multi-layered clove-blossom pattern along the cutting edge that creates an almost floral impression in the steel. Under museum lighting, these patterns seem to dance and shimmer, revealing the extraordinary control Kunimune exercised over the hardening process.
Notice the broad body (mihaba) and the dignified, commanding presence of the blade. Even after being shortened, the tachi retains its majestic proportions, with a base width of 3.0 cm tapering to 2.2 cm near the tip. The gentle curvature speaks to the aesthetic sensibilities of the Kamakura warrior class, who valued both beauty and functionality in their weapons.
The midare-utsuri — a shadowy, cloud-like pattern visible on the flat of the blade — is another distinctive feature of Bizen-school swords. This phenomenon occurs naturally during the forging and tempering process and is considered a mark of quality in classical Japanese swords.
A kuro-nuri uchigatana koshirae (black-lacquered sword mounting) accompanies this tachi, adding another dimension to the viewing experience and providing a glimpse into how such a weapon would have been carried and presented.
The Komatsu Yasuhiro Collection
This tachi is part of the Komatsu Yasuhiro Collection, an extraordinary assemblage of 14 Japanese swords — including 7 National Treasures, 6 Important Cultural Properties, and 1 Specially Important Sword — donated to Fukuyama City in 2018.
The late Komatsu Yasuhiro, founder of FPCO (a major food-packaging company headquartered in Fukuyama) and an honorary citizen of the city, acquired these blades with a deep personal passion for Japanese sword artistry. Upon his passing in 2017, his family honored his wish that the collection remain intact and accessible to the public by donating it to Fukuyama City.
With 7 National Treasure swords, the Fukuyama Museum of Art now holds the second-largest collection of National Treasure swords among Japanese museums, ranking just behind the Tokyo National Museum (19 swords) and equaling the famed Tokugawa Art Museum in Nagoya. The collection rotates regularly, with different swords exhibited throughout the year, making each visit a unique experience.
Four National Treasure Swords by Kunimune
It is worth noting that four tachi bearing the Kunimune signature have been designated as National Treasures, each housed at a different institution across Japan. Together, they offer a comprehensive view of this master swordsmith's artistry:
- Tachi, signed Kunimune — Fukuyama Museum of Art, Hiroshima (this blade)
- Tachi, signed Kunimune — Toshogu Shrine, Tochigi
- Tachi, signed Kunimune — Tokugawa Art Museum, Aichi
- Tachi, signed Kunimune — Terukuni Shrine, Kagoshima
The Fukuyama example is distinguished by its particularly vibrant hamon, making it stand out even among these four exceptional works.
Visiting the Fukuyama Museum of Art
The Fukuyama Museum of Art enjoys one of the most convenient locations of any art museum in Japan. Situated within the verdant Fukuyama Castle Park, it is just a 5-minute walk (approximately 400 meters) west of the north exit of JR Fukuyama Station. Fukuyama Station is a stop on the Sanyo Shinkansen line, making the museum easily accessible from major cities such as Osaka, Hiroshima, and Okayama.
The museum itself is a modern facility featuring spacious exhibition halls, a tea room with views of Fukuyama Castle, educational workshops, and a café. Beyond the Komatsu Yasuhiro Collection of swords, the museum holds works by Kishida Ryusei, de Chirico, Chagall, and other notable Japanese and European artists.
Please note that the swords in the Komatsu Yasuhiro Collection are displayed on a rotating basis, with individual blades typically exhibited for limited periods throughout the year. This particular tachi is publicly displayed approximately once every one to two years. It is advisable to check the museum's official website or contact them directly before your visit to confirm current exhibition schedules.
Nearby Attractions
Fukuyama and its surroundings offer a wealth of cultural and scenic experiences that complement a visit to the museum.
Fukuyama Castle stands directly adjacent to the museum and is one of the few castles in Japan visible from a Shinkansen platform. Reconstructed in 2022 for its 400th anniversary, the castle features interactive museum exhibits and panoramic views from the top floor.
Tomonoura (Tomo no Ura), a historic port town about 30 minutes south of Fukuyama by bus, has inspired artists and travelers for centuries. Its traditional townscape, stunning seaside views, and connection to the story of Sakamoto Ryoma make it a must-visit destination.
Hiroshima Prefectural Museum of History (Fukuyama Kusado Sengen Museum) is located just 150 meters from the art museum, showcasing the remarkable archaeological finds from the Kusado Sengen medieval town site.
Onomichi, about 20 minutes east of Fukuyama by train, is famous for its hillside temple walk, charming cat alleys, and panoramic views of the Seto Inland Sea.
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Q＆A
- Is the Tachi signed Kunimune always on display at the Fukuyama Museum of Art?
- No. The swords in the Komatsu Yasuhiro Collection are exhibited on a rotating basis. This particular tachi is displayed approximately once every one to two years. Please check the museum's official website or contact them in advance to confirm current exhibitions.
- Is English signage or audio guide available at the museum?
- The museum provides basic English information for major exhibits. However, detailed descriptions of the sword collection may be primarily in Japanese. It is recommended to research the historical background beforehand or bring a translation app for the best experience.
- How do I get to the Fukuyama Museum of Art from major cities?
- Take the Sanyo Shinkansen to JR Fukuyama Station (approximately 1 hour from Shin-Osaka, 25 minutes from Hiroshima Station, or 35 minutes from Okayama Station). From the station's north exit, walk west for about 5 minutes (400 meters) to reach the museum.
- Can I photograph the National Treasure swords?
- Photography is generally not permitted in the exhibition galleries at the Fukuyama Museum of Art. Please respect this rule to help preserve these irreplaceable cultural treasures.
- What makes this Kunimune tachi special compared to other National Treasure swords by the same smith?
- Among the four National Treasure tachi bearing the Kunimune signature, this blade is particularly celebrated for its exceptionally vibrant and elaborate juka-choji (layered clove-blossom) hamon pattern. It is widely regarded as the representative masterpiece of Kunimune's body of work and is described in official records as "superbly preserved beyond comparison."
Basic Information
| Name | Tachi, signed Kunimune (太刀〈銘国宗〉) |
|---|---|
| Designation | National Treasure (Crafts) |
| Date of Designation | November 14, 1953 |
| Period | Kamakura period (13th century) |
| Swordsmith | Kunimune (Bizen Saburo Kunimune) |
| Dimensions | Blade length: 72.7 cm, Curvature: 2.5 cm, Base width: 3.0 cm, Tip width: 2.2 cm, Kissaki length: 3.9 cm, Tang length: 20.0 cm |
| Construction | Shinogi-zukuri, iori-mune, chu-kissaki, koshi-zori |
| Inscription | 國宗 (Kunimune) |
| Collection | Komatsu Yasuhiro Collection |
| Owner | Fukuyama City |
| Location | Fukuyama Museum of Art, 2-4-3 Nishi-machi, Fukuyama, Hiroshima 720-0067 |
| Hours | 9:30 – 17:00 (last entry 16:30) |
| Closed | Mondays (or the following day if Monday is a national holiday), Year-end/New Year holidays |
| Admission | Permanent collection: 310 yen (adults); Free for high school students and younger |
| Access | 5-minute walk from JR Fukuyama Station (north exit), west approximately 400 m |
| Website | https://www.city.fukuyama.hiroshima.jp/site/fukuyama-museum/ |
References
- 国宝-工芸｜太刀 銘 国宗［ふくやま美術館/広島］ | WANDER 国宝
- https://wanderkokuho.com/201-00411/
- 小松安弘コレクションについて - 福山市ホームページ
- https://www.city.fukuyama.hiroshima.jp/site/fukuyama-museum/194068.html
- 国指定文化財等データベース - 太刀〈銘国宗〉
- https://kunishitei.bunka.go.jp/heritage/detail/201/541
- 備前三郎国宗（刀工） - 名刀幻想辞典
- https://meitou.info/index.php/備前三郎国宗
- 施設利用案内 - ふくやま美術館 - 福山市ホームページ
- https://www.city.fukuyama.hiroshima.jp/site/fukuyama-museum/2912.html
- 鎌倉時代の名工 | 刀剣の専門サイト
- https://www.meihaku.jp/sword-basic/kamakura-sword/
Last verified: 2026.03.21