Descrizione
ITEM DESCRIPTION:
Comes with kimono or cotton bag. Comes with certificate of supein Nihonto. Comes with copy of Tokosusho. Comes with NBTHK Tokobetsu Hozon.
Documentation
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Certificate and registration
Appraisal Certificate NBTHKTokobetsu Hozon
Title:
Ichitō-mei Appraisal Certificate.Main text:
Hokuetsu Shinjō resident Kobayashi Seijun forged this.Ansei 4 (1857), year of the Snake, second month, auspicious day.
After examination by this association, it has been determined to be a Tokubetsu Hozon Tōken and is hereby certified as such.
Dated February 21, Reiwa 7 (2025).
Public Interest Incorporated Foundation
The Society for the Preservation of Japanese Art Swords.Length stated: 2 shaku 3 sun 5 bu (approx. 71.2 cm).
Certificate number: 1024065.
Registration Paper (Torokusho)
Osaka No. 61929.
Type: Katana.
Length: 71.8 cm.
Sori: 3.0 cm (registered measurement).
Signed: Hokuetsu Shinjō jū Kobayashi Seijun saku.
Registered December 15, 1970.
Osaka Prefectural Board of Education.
SMITH, SCHOOL AND HISTORICAL CONTEXT
The mei clearly identifies the smith as Hokuetsu Shinjō jū Kobayashi Seijun, active in Echigo Province (Hokuetsu). Seijun is documented as the same individual known as Kobayashi Masaoki, working in the late Edo period.
Dated Ansei 4 (1857), the blade belongs to the closing phase of the Edo period, immediately preceding the Bakumatsu upheaval. During this era, many smiths sought refined workmanship inspired by classical traditions.
The Tokubetsu Hozon designation confirms recognized artistic and historical merit.
TECHNICAL DESCRIPTION OF THE BLADE
Hamon
A well-defined suguha hamon runs consistently along the cutting edge, controlled and even, with subtle internal activity and a natural transition into the kissaki.Jihada
Fine visible itame grain typical of late Shinshintō production. The steel exhibits density and structural consistency.Nakago
Ubu nakago with one mekugi-ana.
Stable dark patina consistent with age.
The mei is deeply and confidently cut, proportionally balanced.Geometry
Nagasa approximately 71.8 cm.
Current measured sori approximately 2 cm.
Elegant and harmonious sugata.
Properly proportioned kissaki with smooth yokote transition.Overall condition
Excellent structural preservation. The blade retains clear hamon definition and well-preserved surface structure.
MOUNTING
Presented in custom-fitted shirasaya.
The shirasaya ensures optimal preservation conditions and emphasizes the intrinsic artistic quality of the blade.
