{"id":3089,"date":"2025-06-13T17:19:47","date_gmt":"2025-06-13T08:19:47","guid":{"rendered":"https:\/\/selected-japanese-swords.com\/ifu\/?post_type=product&p=3089"},"modified":"2026-03-25T18:44:18","modified_gmt":"2026-03-25T09:44:18","slug":"bishu-osafune-sukesada-1505-authentic-katana-with-sayagaki-scabbard-inscription","status":"publish","type":"product","link":"https:\/\/selected-japanese-swords.com\/ifu\/product\/bishu-osafune-sukesada-1505-authentic-katana-with-sayagaki-scabbard-inscription\/","title":{"rendered":"Bishu Osafune Sukesada(\u5099\u5dde\u9577\u8229\u7950\u5b9a) \u2013 Authentic Katana(1505) – Scabbard Inscribed by Sword Expert"},"content":{"rendered":"

From the Katana Enthusiast<\/h2>\n
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A master-level Katana by one of Japan\u2019s most celebrated swordsmiths, complete with a rare dated signature.<\/strong><\/span><\/p>\n


This exceptional piece was forged in 1505 by Bishu Osafune Sukesada, a master swordsmith whose works are ranked at the highest level of classical Japanese blades. It bears both a clearly inscribed signature and the exact date of its creation\u2014features that significantly enhance its value as a historical artifact and collector\u2019s piece.<\/strong><\/span><\/p>\n


Adding further to its appeal is a meticulously crafted Tachi-style Koshirae (mounting), along with a Sayagaki (scabbard inscription) that affirms its provenance. Altogether, a complete package of artistry, legacy, and authenticity.<\/strong><\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Table of Contents<\/span><\/div>\n
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  1. Katana Certificate of Authenticity and Registration<\/a><\/li>\n
  2. Each part of the Katana<\/a>\n
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    1. 1. Toshin(\u5200\u8eab)<\/a><\/li>\n
    2. 2. Hamon(\u5203\u6587)<\/a><\/li>\n
    3. 3. Jigane(\u5730\u9244)<\/a><\/li>\n
    4. 4. Nakago(\u830e)<\/a><\/li>\n
    5. 5. Tsuba (\u9354)<\/a><\/li>\n
    6. 6. Koshirae(\u62f5\u3048)<\/a><\/li>\n<\/ol>\n<\/li>\n
    7. About Bishu Osafune Sukesada<\/a>\n
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      1. 1. Overview<\/a><\/li>\n
      2. 2. Genealogy of Bishu Osafune Sukesada<\/a><\/li>\n
      3. 3. Characteristics of This Katana<\/a><\/li>\n<\/ol>\n<\/li>\n
      4. From the Gokaden Lineage: Bizen-den Roots<\/a><\/li>\n
      5. Buyer\u2019s Tips<\/a><\/li>\n
      6. Shipment<\/a>\n
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        1. 1. Time required for delivery<\/a><\/li>\n
        2. 2. shipping charges<\/a><\/li>\n<\/ol>\n<\/li>\n
        3. Payment<\/a><\/li>\n
        4. Frequently Asked Questions (FAQ)<\/a><\/li>\n<\/ol>\n<\/div>\n

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          Katana Certificate of Authenticity and Registration<\/h2>\n

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          Based on a comprehensive evaluation of every detail and element of craftsmanship, we can confidently state that this Katana is not only a \u201cReal Katana,\u201d but also an\u00a0\u201cAuthentic Katana\u201d<\/strong>\u00a0of exceptional historical value. For the definition of an Authentic Katana, please refer to this page.\uff08\u2192\u00a0What Makes A Katana Real<\/a>\uff09<\/p>\n

          Although it has not yet been submitted for NBTHK appraisal due to recent acquisition, its craftsmanship is beyond question.<\/p>\n

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          All Real Katanas are officially registered with the Board of Education of the prefecture in which they are located, and each comes with a registration certificate. This Katana also comes with its registration certificate, as shown in the attached image.<\/p>\n

          The original certificate must be returned to the Board of Education prior to export, but we will provide a copy of the certificate along with your purchase.<\/p>\n

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          Each part of the Katana<\/h2>\n

          1. Toshin(\u5200\u8eab)<\/h3>\n

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          The Toshin<\/em> refers to the entire blade of the Katana.<\/p>\n

          When evaluating a Katana, the blade\u2019s length\u2014and particularly its sori<\/strong> (curvature)\u2014is a key point of appreciation.<\/p>\n

          The sori<\/em> is what enables the Japanese sword to remain unbreakable and unbendable, while also allowing it to cut through objects with remarkable efficiency and minimal force.<\/p>\n

          If you’re interested in the scientific background of this, we explain the theory in detail in the following article:<\/p>\n

          Curved for a Reason: The Hidden Function of Authentic Katana\u2019s Shape<\/a><\/p>\n

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          \u3010Toshin of This Katana\u3011<\/p>\n