NA 2026.006
Last revised
Nihontō · Wakizashi · Shirasaya
Wakizashi Study III
脇差 · 白鞘
Period unrecorded
An unpapered 44.5 cm wakizashi in shirasaya with a difficult inscription recorded provisionally as 信国作; no maker attribution is asserted pending shinsa.
AttributionNobukuni saku · provisional transcription · 信国作（暫定読）Provisional transcription of the visible inscription; the blade remains unattributed pending shinsa
- Nagasa
- 44.5 cm
- Sori
- 1.2 cm
- Mei
- 信国作 · provisional reading
Object record
Overview
Object record
- Item
- Wakizashi (脇指) in plain wooden shirasaya (白鞘)
- Mei
- Nobukuni saku · provisional transcription
信国作（暫定読） - Nagasa
- 44.5 cm
- Sori
- 1.2 cm
- Width
- Motohaba 2.8 cm · sakihaba 2.0 cm
- Kasane
- Motogasane 0.5 cm · sakigasane 0.4 cm
- Mekugi-ana
- One · both nakago faces photographed
- Period
- Unrecorded · no appraisal paper supplied
Condition record
- Photographs
- Sixteen archival photographs · no video
- Documents
- No registration card, NBTHK/NTHK paper, or other certificate shown
Photographic record
Plates · 16
Available views arranged as a comparative object study; descriptions distinguish observation from documentary attribution.
Click underlined specialist terms for concise notes and construction diagrams.
I
Shirasaya & Object
白鞘・全体
2 plates
Plate I.1 · 白鞘・全体
Drawn presentation
Blade drawn from its plain wooden , with the storage mounting aligned beside it.
Plate I.2 · 白鞘・全体
Closed
Closed plain wooden , documenting the complete storage mounting.
II
Sugata & Nakago
姿・茎
4 plates
Plate II.1 · 姿・茎
Full ·
Full , . The 44.5 cm blade has 1.2 cm , moderate taper, and a relatively full-bodied profile; old polish and reflected light limit any reading of the .
Plate II.2 · 姿・茎
Full ·
The full-length view records the same curvature and darkened polish.
Plate II.3 · 姿・茎
·
, . One and a difficult, shallow are visible. The inscription is transcribed provisionally as Nobukuni saku (信国作), consistent with the source title and owner review; wear and photographic contrast prevent independent authentication. The blade remains unattributed pending shinsa.
Plate II.4 · 姿・茎
·
, . One , a rounded , horizontal-to-oblique surface marks, and extensive corrosion are recorded; no legible appears on this face.
III
Habaki & Profile
鎺・断面観察
4 plates
Plate III.1 · 鎺・断面観察
transition
Oblique view across the and -to-blade transition.
Plate III.2 · 鎺・断面観察
Blade profile
Edge-on view along the blade toward the ; recorded visually, not used to infer measurements.
Plate III.3 · 鎺・断面観察
·
One face of a plain, one-piece yellow-metal with rounded shoulders and a softly curved lower edge. Exact alloy is not assigned from color alone.
Plate III.4 · 鎺・断面観察
·
Opposing face of the plain . Fine horizontal finishing lines and small handling marks are visible across the surface.
IV
Surface Condition
地鉄・鋒
6 plates
Plate IV.1 · 地鉄・鋒
Blade surface ·
Blade-surface close-up, . Scratches, dark specks, small areas of oxidation or pitting, and flash glare interrupt the ji; no or classification is supportable from this view.
Plate IV.2 · 地鉄・鋒
Blade surface ·
Blade-surface close-up, . Scratches, reflections, and current polish condition remain visible.
Plate IV.3 · 地鉄・鋒
·
, . The point and remain geometrically readable, while an irregular bright-edged surface feature in the ji and extensive scratches require in-hand examination before any kizu terminology is applied.
Plate IV.4 · 地鉄・鋒
Condition detail ·
Additional condition record. No restoration or defect diagnosis is inferred from the photograph alone.
Plate IV.5 · 地鉄・鋒
Condition detail ·
Additional condition record. Dark specks, scratches, and uneven polish are visible, but no named flaw or restoration prognosis is inferred from the photograph alone.
Plate IV.6 · 地鉄・鋒
·
, . No sharpening, flaw classification, or restoration recommendation is made from this image.
Photographs courtesy of GN-1-Japan, used with permission.
Revision history
- Reframed 信国作 as a provisional transcription and left the blade unattributed pending shinsa.
- Public catalogue record established.