Tanto(Kaiken) - Mumei(No Signature) - Tanto Koshirae - Ubu Nakago - Shinto Era - Yamagata 26857

¥198,000 ¥220,000

This piece is a very rare and unique custom-built sword with an extremely narrow blade.

The blade has been sharpened and is in very good condition with no flaws or rust. The jigane is a well-polished itame and has a hataraki like chikei, making it a very impressive sword despite its slender body. The hamon is a very elegant niedeki suguha.

In Nakago, we can confirm that one character “Hidari” is carved on the Sashiura side. The engraving of a single character Hidari means that this is a famous sword of the Samonji sect, which was active from the late Kamakura period to the Nanbokucho period, but the registration certificate states that the inscription is "unknown. This is probably because this koshirae was first registered by the Yamagata Board of Education in 1964, but the person in charge at that time most likely overlooked this character.

The koshirae is wrapped in beautifully polished sharkskin throughout the tsuka and has an elegant black kanshitsu-lacquered Saya.

There is no doubt that this koshirae is a special piece, and if you are looking for a rare Japanese sword, this is surely a gem to put on your wish list.

  • Blade length: 17.5 cm
  • Curvature: 0.0 cm
  • Number of Mekugi hole: 1
  • Motohaba: 12.9 mm
  • Motokasane: 5.9 mm
  • Signature: No signature
  • Era: Shinto
  • Structure: Hira-zukuri, Iori-mune
  • Jigane: Itame
  • Hamon: Suguha
  • Boshi: Massugu Haitte Omaru ni Kaeru
  • Weight: 60 g(blade only)/130 g(without Saya)
  • Nakago: Ubu
  • Koshirae: Dashizame Tsuka with Kanshitsu-lacquered Saya
  • Original Registration No.: Yamagata 26857

Please contact us if the katana you are looking for is not listed here.

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.

Authenticity in Every Detail

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.