Iron tsuba aori gata with scrollwork decoration - Edo period

Object: Tsuba (鍔) – Japanese sword guard
Sword type: Katana
Shape: Mokko-gata (four-lobed melon shape)
School/Tradition: Heianjō-zōgan → Kaga or Aizu Shōami
Period: Late Edo period (circa 1750–1850)
Geographic origin: Japan, Kaga region (Kanazawa) or Aizu (present-day Fukushima Prefecture)

Main material: Wrought iron (tetsu) with a deep brown-black patina

Decoration: Gilded brass inlays (nunome-zōgan) forming a network of stylized clouds and waves (kumo-nami-zu)
Special ornaments: Small raised brass discs (hira-zōgan), probably symbols of celestial bodies or water droplets

Dimensions: Height: 80 mm — Width: 74 mm — Thickness: 4–5 mm Weight: 121 grams
Openings: Nakago-ana (central): trapezoidal, slightly worn; Ryōhitsu (lateral): symmetrical, elongated oval

Edge (mimi): Rounded and slightly molded, continuous decoration; hammered appearance and homogeneous patina

Seppa-dai (mounting area): Flat surface with slight wear marks, consistent with actual mounting on a blade

The cloud and wave motif (雲波, kumo-nami) belongs to the classical Japanese vocabulary.

It symbolizes:
the perpetual movement of the natural world,
the duality of heaven and water,
sometimes divine protection or fluid power (often associated with dragons).

This decoration was particularly popular in the Kaga and Aizu provinces, regions renowned for their ornamental tsuba with elegant and peaceful themes.

The Heianjō-zōgan school (Kyōto, 15th century) was the first to introduce the use of brass and copper inlays on iron.

Their style was passed on:
to the Kaga-zōgan school (Kanazawa), which refined the technique in the 17th century,
and to the Aizu Shōami school (late Edo period), where the motifs became more decorative and symmetrical.
This tsuba thus belongs to this decorative lineage, at a time when the defensive function of the hilt was overshadowed by its aesthetic and status-related role for the samurai.

Ref: VZ2FNV2MIJ