Katana Rai Kuninaga

Katana Rai Kuninaga

Unsigned, den Rai Kuninaga
Late Kamakura, early Nanbokucho period, Circa 1332

NBTHK Juyō Tōken 


Nagasa [lenght]: 71.5 cm
Motohaba [width at bottom]: 2.7 cm
Sakihaba [width at top]: 1.9 cm
Sori [curvature]: 2.3 cm
Kissaki [tip]: 3.2 cm

Sugata [configuration]
Shinogi-zukuri, koshi-zori, iori-mune, chu-kissaki

Kitae [forging pattern]
Bright itame mixed with mokume and nagare, plenty of jinie and chikei

Hamon [tempering pattern]
Suguha mixed to ko-choji and ko-gunome; ashi, , hotsure, yubashiri, kinsuji and sunagashi

Bōshi [point]
Many hakikake forming kaen

Nakago [tang]
O-suriage, kirijiri yasurime; three mekugi-ana

The blade comes with a Juyō token (Important sword) certificate issued by the Nihon Bijutsu Token Hozon Kyokai (Session nr. 59) 

The shirasaya has been inscribed by Tanobe Michiro sensei in 2013; he states the sword is a masterpiece by Rai Kuninaga, and “chinchin-chocho”, meaning “very rare and very precious”:

Designated as jûyō-tōken in course of the 43rd jûyō-tōken shinsa 
Jōshû Rai Kuninaga 
Ō-suriage mumei. This smith was a student of Rai Kunitoshi, but as he moved later to Nakajima in Settsu province and made swords there, he is usually referred to as Nakajima-Rai. This blade is a masterwork whose jiba shows the characteristic features of the smith very well. 
Very rare, very precious. 
Blade length: 2 shaku, 3 sun e 6 bu
Written by Tanzan Hendō in October of the year of the snake of this era (2013)

The sword is accompanied by a good old koshirae with high level fittings. The two piece habaki, part of which is solid gold, features a version of the Aoi mon of the Tokugawa house used by the Moriyama Matsudaira daimyō branch. 


Rai Kunitoshi, one of the best Japanese sword makers of all time, had many fine students, but only three of them produced swords that were later signed with his name, accordingly to the daimei tradition: Kuninaga, Kunimitsu e Kunitsugu. Kuninaga is considered one of the great sword-smiths of the Rai school, working between the late Kamakura period and into the Nanbokucho period. After working exclusively for Kunitoshi and signing his blades with the master’s name, which probably says something about the important role he played in the school, Kuninaga moved to Nakajima around 1329 and founded the Nakajima-Rai school. At this point he started signing his own blades but there are still only few works remaining to us that Rai Kuninaga signed with his name and there are probably more daimei for Rai Kunitoshi than existing zaimei blades of his own.

This sword is of great quality and is considered a masterpiece of Rai Kuninaga, with strong activities both in the hamon and in the jihada. The shape is typical of the late Kamakura period, so it is probably from the time when he moved to Nakajima. It had been used in battle and carries a very nice kirikomi on the mune, a cut from another sword happened during an actual fight.

The sword photographs here are provided by Darcy Brockbank of Yuhindo, for which I owe a debt of thanks.

Price band: Over 50,000€

Katana for sale. Price on request. Inventory: tok-1410

Inventory Nr: 1410

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