Overview
The Tachi (Japanese sword) with the signature of Yoshifusa is a masterpiece created by Yoshifusa, a renowned swordsmith who was active in Bizen Province (modern Okayama Prefecture) during the mid-Kamakura Period. It is celebrated as one of the finest examples representing the style of the Fukuoka Ichimonji School and was designated a National Treasure in 1955. Today, it is owned by the National Research Institute of Cultural Properties and displayed at the Tokyo National Museum in Taito Ward, Tokyo, preserving the magnificent beauty that symbolizes the golden age of Japanese swordsmithing.
Historical Background
The Kamakura Period was a time of dramatic development for sword production, coinciding with the rise of the samurai class. In Bizen Province, which served as a major center for craftsmanship, many outstanding schools of smiths emerged. The “Fukuoka Ichimonji School,” to which Yoshifusa belonged, is a prestigious lineage; it gained its name because smiths would carve the character ‘one’ (ichi) on the sword’s tang (nakago). Yoshifusa was a leading figure who established the most brilliant style within this school. This piece originated against the backdrop of the mid-Kamakura Period, representing a powerful fusion between the spirit of the warrior class and highly sophisticated artistic craftsmanship.
Features and Appeal
The greatest appeal of this work is its combination of “splendor” (kami) and “sturdiness” (gōken), which are the hallmarks of the Fukuoka Ichimonji School. Key features include:
- Splendid Tempering Pattern (Hamon): The blade displays a gorgeous and complex wavy pattern called Jūka-chōji, which depicts overlapping floral motifs. This technique was Yoshifusa’s most signature skill.
- Imposing Shape: It possesses the powerful and magnificent form characteristic of mid-Kamakura Period tachi. These swords feature a wide blade body (mihaba) and a deep inward curve at the waist, with a tip resembling an ikubi (wild boar’s head).
- Exquisite Core Steel (Jigate): The core steel is meticulously forged, showcasing the distinct “reflection” (utsuri) unique to Bizen swords. This sheen further enhances the brilliance of the tempering pattern.
- Historical Value: Its high academic and artistic value stems from its excellent preservation, retaining the appearance it had when created. Furthermore, the clear signature of the smith, Yoshifusa, adds immense historical significance.
Source: Excerpted from the National Designated Cultural Properties Database (https://kunishitei.bunka.go.jp/bsys/index)