Treasures of JapanA catalogue of Japan's designated cultural properties
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Important Cultural Property

Blade for a Long Sword (Tachi)

太刀
Blade for a Long Sword (Tachi) (太刀)
PLATE IImage: Tokyo National Museum, via ColBase — CC BY 4.0
At a glance — Swords & Armour · Nanbokuchō period, 14th century · held by Tokyo National Museum · designated Important Cultural Property of Japan.

Fact Sheet

Designation
Important Cultural Property (重要文化財)
Date
1301–1400
Location
Ueno, Tokyo
Catalogue ID
cobas-175862

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Unshō was a member of the Ukai, a group of swordsmiths in Bizen Province, western Japan. This blade by Unshō features a texture resembling straight wood grain and a tempering pattern with a sharply defined outline.

— Museum description: Tokyo National Museum (CC BY 4.0), via ColBase / Japan Search.

Record & Sources

Cite this page: “Blade for a Long Sword (Tachi)（太刀）.” Treasures of Japan, catalogue no. cobas-175862. Tokyo National Museum. https://treasures.yamato-kenkou.com/treasures/blade-for-a-long-sword-tachi-175862/ — entry last verified 1 November 2026.
Full record data (as published in the official catalogue record)
  • Genre: Arms & Armor
  • Cultural property designation: Important Cultural Property
  • 員数: 1口
  • 分類: 刀剣
  • 銘文等: 銘 雲生

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