ご覧頂きありがとうございます。【貴重】明治5年(1872年)千代鶴貞秀東京赤坂迎賓館の双頭レールで制作した小刀です。同じ物は全国探してもないかもしれません。Thank you very much for seeing it.【valuable】 5th(1872) year of the Meiji era, written by Hideo Chiyozuru, of the Akasaka State Guest House, Tokyo This is a small sword made with a double-headed rail. You may not be able to find the same thing even if you search all over the country.#HOUZAN小刀