{
  "schemaVersion": 1,
  "canonicalUrl": "https://zufu.whiskey.works/objects/mumei-wakizashi-study-04/",
  "recordUrl": "https://zufu.whiskey.works/objects/mumei-wakizashi-study-04/record.json",
  "accession": "NA 2026.007",
  "title": "Mumei Wakizashi Study IV",
  "japaneseTitle": "無銘脇差 · 白鞘",
  "classification": {
    "category": "nihonto",
    "form": "wakizashi",
    "presentation": [
      "shirasaya"
    ]
  },
  "period": "Period unrecorded",
  "summary": "A compact, comparatively stout 37.1 cm mumei wakizashi in shirasaya, with two mekugi-ana, a broad hamon visible near the point, and an unresolved dark linear surface feature.",
  "attribution": {
    "label": "Mumei",
    "japanese": "無銘",
    "qualifier": "No appraisal paper; both nakago faces and two mekugi-ana photographed"
  },
  "highlights": [
    {
      "label": "Nagasa",
      "value": "37.1 cm"
    },
    {
      "label": "Sori",
      "value": "0.9 cm"
    },
    {
      "label": "Nakago",
      "value": "Two mekugi-ana"
    }
  ],
  "revisedOn": "2026-07-23",
  "revisions": [
    {
      "date": "2026-07-22",
      "note": "Public catalogue record established."
    },
    {
      "date": "2026-07-23",
      "note": "Public metadata and terminology reviewed."
    }
  ],
  "hero": {
    "image": "https://zufu.whiskey.works/media/na-2026-007/01.jpg",
    "alt": "Mumei Wakizashi Study IV wakizashi drawn from its plain wooden shirasaya on purple cloth"
  },
  "sections": [
    {
      "title": "Object record",
      "facts": [
        {
          "label": "Item",
          "value": "Wakizashi (脇指) in plain wooden shirasaya (白鞘)"
        },
        {
          "label": "Attribution",
          "value": "Mumei / unsigned · photographic record\n無銘"
        },
        {
          "label": "Nagasa",
          "value": "37.1 cm"
        },
        {
          "label": "Sori",
          "value": "0.9 cm"
        },
        {
          "label": "Width",
          "value": "Motohaba 2.8 cm · sakihaba 2.0 cm"
        },
        {
          "label": "Kasane",
          "value": "Motogasane 0.5 cm · sakigasane 0.4 cm"
        },
        {
          "label": "Mekugi-ana",
          "value": "Two · both nakago faces photographed"
        },
        {
          "label": "Period",
          "value": "Unrecorded · no appraisal paper supplied"
        }
      ],
      "notes": [
        {
          "lead": "Attribution boundary.",
          "body": "Both nakago faces and two mekugi-ana photographed; no legible inscription and no appraisal paper supplied."
        }
      ]
    },
    {
      "title": "Condition record",
      "facts": [
        {
          "label": "Photographs",
          "value": "Sixteen archival photographs · no video"
        },
        {
          "label": "Documents",
          "value": "No registration card, NBTHK/NTHK paper, or other certificate shown"
        }
      ],
      "notes": [
        {
          "lead": "Visible record.",
          "body": "A darkened, scratched blade surface and a long irregular dark linear feature are visible. Photographs alone do not establish whether that feature is superficial, an opening in the steel, or another condition; in-hand examination is required."
        }
      ]
    }
  ],
  "plates": [
    {
      "number": "I.1",
      "group": "I",
      "groupTitle": "Shirasaya & Object",
      "title": "Drawn presentation",
      "japanese": "白鞘・全体",
      "caption": "Blade drawn from its plain wooden shirasaya, with the storage mounting aligned beside it.",
      "alt": "Mumei Wakizashi Study IV: Drawn presentation",
      "image": "https://zufu.whiskey.works/media/na-2026-007/01.jpg",
      "redacted": false
    },
    {
      "number": "I.2",
      "group": "I",
      "groupTitle": "Shirasaya & Object",
      "title": "Closed shirasaya",
      "japanese": "白鞘・全体",
      "caption": "Closed plain wooden shirasaya, documenting the complete storage mounting.",
      "alt": "Mumei Wakizashi Study IV: Closed shirasaya",
      "image": "https://zufu.whiskey.works/media/na-2026-007/02.jpg",
      "redacted": false
    },
    {
      "number": "II.1",
      "group": "II",
      "groupTitle": "Sugata & Nakago",
      "title": "Full sugata · omote",
      "japanese": "姿・茎",
      "caption": "Full sugata, omote. The short 37.1 cm blade retains 2.8 cm motohaba and 2.0 cm sakihaba, giving it a comparatively stout profile despite moderate taper.",
      "alt": "Mumei Wakizashi Study IV: Full sugata · omote",
      "image": "https://zufu.whiskey.works/media/na-2026-007/03.jpg",
      "redacted": false
    },
    {
      "number": "II.2",
      "group": "II",
      "groupTitle": "Sugata & Nakago",
      "title": "Full sugata · ura",
      "japanese": "姿・茎",
      "caption": "The ura full-length view records the same 0.9 cm sori and worn polish.",
      "alt": "Mumei Wakizashi Study IV: Full sugata · ura",
      "image": "https://zufu.whiskey.works/media/na-2026-007/04.jpg",
      "redacted": false
    },
    {
      "number": "II.3",
      "group": "II",
      "groupTitle": "Sugata & Nakago",
      "title": "Nakago · omote",
      "japanese": "姿・茎",
      "caption": "Nakago, omote. Two mekugi-ana and a nearly square kiri-jiri are visible. The two holes establish more than one mounting position, but photographs alone do not prove suriage.",
      "alt": "Mumei Wakizashi Study IV: Nakago · omote",
      "image": "https://zufu.whiskey.works/media/na-2026-007/05.jpg",
      "redacted": false
    },
    {
      "number": "II.4",
      "group": "II",
      "groupTitle": "Sugata & Nakago",
      "title": "Nakago · ura",
      "japanese": "姿・茎",
      "caption": "Nakago, ura. Both mekugi-ana, dense brown patina, and worn surface texture are recorded; no mei is visible.",
      "alt": "Mumei Wakizashi Study IV: Nakago · ura",
      "image": "https://zufu.whiskey.works/media/na-2026-007/06.jpg",
      "redacted": false
    },
    {
      "number": "III.1",
      "group": "III",
      "groupTitle": "Habaki & Profile",
      "title": "Machi transition",
      "japanese": "鎺・断面観察",
      "caption": "Oblique view across the machi and nakago-to-blade transition.",
      "alt": "Mumei Wakizashi Study IV: Machi transition",
      "image": "https://zufu.whiskey.works/media/na-2026-007/07.jpg",
      "redacted": false
    },
    {
      "number": "III.2",
      "group": "III",
      "groupTitle": "Habaki & Profile",
      "title": "Blade profile",
      "japanese": "鎺・断面観察",
      "caption": "Edge-on view along the blade toward the kissaki; recorded visually, not used to infer measurements.",
      "alt": "Mumei Wakizashi Study IV: Blade profile",
      "image": "https://zufu.whiskey.works/media/na-2026-007/08.jpg",
      "redacted": false
    },
    {
      "number": "III.3",
      "group": "III",
      "groupTitle": "Habaki & Profile",
      "title": "Habaki · omote",
      "japanese": "鎺・断面観察",
      "caption": "One face of a plain, one-piece yellow-metal habaki with a gently domed upper edge. Scattered dents and scratches are visible; exact alloy is not assigned from color alone.",
      "alt": "Mumei Wakizashi Study IV: Habaki · omote",
      "image": "https://zufu.whiskey.works/media/na-2026-007/09.jpg",
      "redacted": false
    },
    {
      "number": "III.4",
      "group": "III",
      "groupTitle": "Habaki & Profile",
      "title": "Habaki · ura",
      "japanese": "鎺・断面観察",
      "caption": "Opposing face of the plain habaki, showing further surface wear and the asymmetric overlap at one side seam.",
      "alt": "Mumei Wakizashi Study IV: Habaki · ura",
      "image": "https://zufu.whiskey.works/media/na-2026-007/10.jpg",
      "redacted": false
    },
    {
      "number": "IV.1",
      "group": "IV",
      "groupTitle": "Surface Condition",
      "title": "Blade surface · ura",
      "japanese": "地鉄・鋒",
      "caption": "Blade-surface close-up, ura. A long irregular dark linear feature crosses the worn ji amid scratches and darkening; its depth and nature cannot be established photographically.",
      "alt": "Mumei Wakizashi Study IV: Blade surface · ura",
      "image": "https://zufu.whiskey.works/media/na-2026-007/11.jpg",
      "redacted": false
    },
    {
      "number": "IV.2",
      "group": "IV",
      "groupTitle": "Surface Condition",
      "title": "Blade surface · ura",
      "japanese": "地鉄・鋒",
      "caption": "Blade-surface close-up, ura. Scratches, reflections, and current polish condition remain visible.",
      "alt": "Mumei Wakizashi Study IV: Blade surface · ura",
      "image": "https://zufu.whiskey.works/media/na-2026-007/12.jpg",
      "redacted": false
    },
    {
      "number": "IV.3",
      "group": "IV",
      "groupTitle": "Surface Condition",
      "title": "Kissaki · ura",
      "japanese": "地鉄・鋒",
      "caption": "Kissaki, ura. A defined yokote and broad undulating hamon are visible toward the point, but the worn polish does not permit a reliable reading of bōshi shape or activity.",
      "alt": "Mumei Wakizashi Study IV: Kissaki · ura",
      "image": "https://zufu.whiskey.works/media/na-2026-007/13.jpg",
      "redacted": false
    },
    {
      "number": "IV.4",
      "group": "IV",
      "groupTitle": "Surface Condition",
      "title": "Condition detail · omote",
      "japanese": "地鉄・鋒",
      "caption": "Additional omote condition record. No restoration or defect diagnosis is inferred from the photograph alone.",
      "alt": "Mumei Wakizashi Study IV: Condition detail · omote",
      "image": "https://zufu.whiskey.works/media/na-2026-007/14.jpg",
      "redacted": false
    },
    {
      "number": "IV.5",
      "group": "IV",
      "groupTitle": "Surface Condition",
      "title": "Condition detail · omote",
      "japanese": "地鉄・鋒",
      "caption": "Additional omote condition record. Darkened patches and linear marks are visible, but no named flaw or restoration prognosis is inferred from the photograph alone.",
      "alt": "Mumei Wakizashi Study IV: Condition detail · omote",
      "image": "https://zufu.whiskey.works/media/na-2026-007/15.jpg",
      "redacted": false
    },
    {
      "number": "IV.6",
      "group": "IV",
      "groupTitle": "Surface Condition",
      "title": "Kissaki · omote",
      "japanese": "地鉄・鋒",
      "caption": "Kissaki, omote. No sharpening, flaw classification, or restoration recommendation is made from this image.",
      "alt": "Mumei Wakizashi Study IV: Kissaki · omote",
      "image": "https://zufu.whiskey.works/media/na-2026-007/16.jpg",
      "redacted": false
    }
  ],
  "rights": {
    "catalogue": "© 2026 whiskey.works",
    "photographs": "Courtesy of GN-1-Japan, used with permission. No downstream reproduction permission is granted."
  }
}