AS25162 Katana: Mumei (Rai Kuniyasu)(NBTHK Tokubetsu Hozon Token)

Katana: in Shirasaya with Koshirae (NBTHK Tokubetsu Hozon Token)

Signature: Mumei (Rai Kuniyasu)
無銘(来国安)

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 Mumei (Rai Kuniyasu).
Habaki: Double-layered plain copper
Blade Length: 70.0 cm (27.56 in)
Curvature: 0.9 cm (0.35 in)
Mekugi Hole: 3
Width at Base (Motohaba): 3.07 cm (1.21 in)
Width at Tip (Sakihaba): 2.09 cm (0.82 in)
Thickness of rim (Kasane): 0.54 cm (0.21 in)
Sword Weight: 700 g
Era: Early Nanbokucho period
Shape: The blade is wide and thick, with a slightly long boshi.
Jigane: Well-forged hadame showing utsuri.
Hamon: Bright and clear nioi-deki with ko-ashi, boshi is rounded and turns back at the tip.

Features: Rai Kuniyasu was a swordsmith of the Rai school, and his disciples are said to have later moved to Echizen. This blade is bright and vivid, with well-visible hada and appearing utsuri.

Koshirae:
Saya (Scabbard): Lacquered in a mixed tone of black and vermillion.
Kojiri: Iron base with wave and paulownia crest design in gold decoration.
Tsuba: Oval iron tsuba with raised rim, decorated in silver to represent trees.
Fuchi: Iron base with flowing water and chrysanthemum motif, colored in gold.
Kashira: Iron base with paulownia crest and wave design, decorated in gold.
Menuki: Designed with omodaka (water plant) crest, decorated in gold.

NBTHK Tokubetsu Hozon Token Certificate
Aoi Art estimation paper: Whole Oshigata