Bibliography and credits

Sources

The sources consulted on 5 October 2026 and the credits of all the images.

On this page
  1. Sources

Sources

Official records and museums

  1. Bunka Isan Online (文化遺産オンライン, Bunka Isan Online): katana signed 源正雄 (Minamoto Masao), Hakodate City Museum

Studies

  1. Markus Sesko, “Kantei 1: Sugata #6”

Dictionaries and encyclopaedias

  1. 日本刀 (Nihontō), Japanese Wikipedia
  2. 源清麿 (Minamoto Kiyomaro), Japanese Wikipedia

Consulted, without a link

  1. Hokkaido Digital Museum: record of the katana signed 源正雄 (Minamoto Masao) in the Hakodate City Museum

Image credits

  1. The tang of the 1859 katana in the Hakodate City Museum, with the signature 源正雄 (Minamoto Masao) (katana-1859-mei.jpg)

    Hakodate City Museum, via Hokkaido Digital Museum, © Hakodate City Museum.

  2. The other side of the same tang: 安政六年八月日 於箱館以沙鉄造之 (Ansei rokunen hachigatsu hi, Hakodate ni oite satetsu o motte kore o tsukuru), “eighth month of 1859, made in Hakodate with iron sand” (katana-1859-fecha.jpg)

    Hakodate City Museum, via Hokkaido Digital Museum, © Hakodate City Museum.

  3. The whole 1859 katana: a 70.3 cm blade (katana-1859.jpg)

    Hakodate City Museum, via Hokkaido Digital Museum, © Hakodate City Museum.