AS25606 Katana： Mumei (Uda Tomotsugu) (NBTHK Tokubetsu Hozon Token)

Orderig number:AS25606

Katana in Shirasaya (NBTHK Tokubetsu Hozon Token)

Signature: Mumei (Uda Tomotsugu)
無銘(宇多友次)

Chuko-to: Ecchu province – Jyojyo Saku
We divide 4 sections for each sword as Saijyo Saku, Jyojyo Saku, Jyo Saku and Regular Saku.
This work is ranked as Jyojyo Saku among the works attributed to Uda Tomotsugu.
Habaki: Double-layered plain copper habaki with kiri-mon crest.
Blade Length: 75.0 cm (29.53 in)
Curvature: 2.9 cm (1.14 in)
Mekugi Hole: 2
Width at Base (Motohaba): 2.71 cm (1.07 in)
Width at Tip (Sakihaba): 1.63 cm (0.64 in)
Thickness: 0.69 cm (0.27 in)
Sword Weight: 710 g
Shape:A solid and well-proportioned blade with considerable curvature, featuring bohi (grooves) carved on both sides extending into the tang.
Jigane:Finely forged ko-itame hada with visible utsuri.
Era: Nanbokucho period, Eitoku era (1381 AD)
Hamon:A suguha hamon that is bright and clear, forming a double-line temper with ko-ashi, and a round-returning boshi.

Features:　The Uda Tomotsugu school spanned from the late Nanbokucho to the late Muromachi period.
This blade features deep curvature, and the bohi runs deeply into the tang.

Aoi Art’s Comment:　At first glance, the blade gives a strong impression of antiquity.
The jigane is dark-toned and excellently crafted.

NBTHK Tokubetsu Hozon Token
Aoi Art estimation paper: Whole Oshigata