Katana - Mumei(No Signature) - NBTHK Juyo Token Certificate - Uchigatana/Shirasaya Koshirae - Suriage Nakago - Koto Era

¥3,120,000

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The Ko-Mihara was a group of swordsmiths who flourished in the area of Mihara in Bingo Province (present-day eastern Hiroshima Prefecture) from the end of the Kamakura period to the Nanboku period. Mihara was famous for its high-quality steel, and many swordsmiths from Yamato are said to have migrated there.

Well-known swordsmiths active during this period include Masaie and Masahiro. Their descendants made swords during the period leading up to the end of the Muromachi period. Since there were manors of various temples in Yamato Province in this area, the influence of Yamato-den swords, such as the combination of masame hada and suguha hamon, is evident in the style of Mihara swords, which is the focus of Ko-Mihara. Mihara Swords from the late Kamakura period to the Nanbokucho period are called "Ko-Mihara," while those from the Muromachi period onward are called "Sue-Mihara.

This piece has a wider shinogi, and a hada with some mokume mixed in with masame, with hoso-suguha hamon. The boshi is arced in a shallow komaru.  On the scabbard, the Hon'ami, the most prestigious and renowned sword appraiser, has identified this sword as a work of Komihara and has written a detailed description of it.

The sword is of a calming taste that offers a glimpse into the temperament of the Yamato samurai, and for being over 700 years old, both the blade and the exterior fittings of the sword are in excellent condition, making it a first-class piece of art with very high ornamental value. The Society for Preservation of Japanese Art Swords recognizes this work as Juyo Token(a historically important sword). We hope you will make this miraculous set of sword blade and koshirae an heirloom of yours.

  • Blade length: 69.5 cm
  • Curvature: 1.7 cm
  • Number of Mekugi hole: 3
  • Sakihaba: 22.4 mm
  • Sakikasane: 4.4 mm
  • Motohaba: 30.2 mm
  • Motokasane: 6.6 mm
  • Signature: No Signature
  • Era: Koto
  • Structure: Shinogi-zukuri, Iori-mune
  • Jigane: Masame
  • Hamon: Hoso-suguha
  • Boshi: Komaru ni Kaeru
  • Weight(without Saya): 670 g
  • Nakago: Suriage
  • Original Registration No.: Hokkaido 29347

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Voices of Authentic Craftsmanship

The quality of the blade and the simplicity of the shirasaya mount truly reflect traditional Japanese mastery. A beautiful and meaningful addition to my collection.

James Holloway

The natural wood finish and clean design highlight the beauty of the blade perfectly. Exactly what I was looking for.

Daniel Fischer,

Rooted in Centuries of Craftsmanship

Every blade reflects generations of knowledge, discipline, and precision passed down through traditional Japanese swordmaking. From the forging of steel to the final finishing touches, each piece is shaped with patience, mastery, and deep respect for heritage.

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From carefully selected materials to the refined finishing of every surface, each sword is crafted and presented with uncompromising attention to detail. Our commitment to authenticity ensures every piece reflects true tradition, lasting quality, and enduring cultural value.

Precision Shaped by Tradition

Designed with balance, simplicity, and purpose, our blades embody the harmony between refined form and skilled craftsmanship. Each sword represents a thoughtful union of strength, elegance, and the timeless discipline of Japanese artisans.

Forged in Tradition. Defined by Precision.

Forged in Tradition. Defined by Precision.

Discover authentic Japanese blades crafted with discipline, balance, and generations of timeless craftsmanship.