Wakizashi in Shirasaya (NBTHK Tokubetsu Hozon paper)
Signature: Nagasone Okimasa
Shinto; Jojosaku; Saijyo Oowazamono: Musashi
The blade was polished.
Blade length : 57.8cm or 22.76inches.
Sori : 1.2cm or 0.473inches.
Width at the hamachi : 2.775cm or 1.09inches.
Width at the Kissaki : 2.03cm or 0.799inches.
Kasane : 0.64cm or 0.252 inches.
Weight of only blade:385g
Era :Edo Kanbun period.
Shape : It is regular size width and thickness with bouhi engraved
in both the surface and the back. There are some sori. The kissaki is long.
Jitetsu :Koitame hada well grained with jinie attached, The chikei is well seen.
It is very elegant jigane.
Hamon : NIe base with deep Nioiguchi . The hamachi side
is suguha and gradually becomes deep nioiguchi Jyuzuba burn around the kissaki.
The ha is bright yet smoky.
Boushi: It is called Kotetsu Boshi it is round burnt ended.
Special feature : Nagasone Okimasa was generally called Atsubee who was a student of Kotetsu and become adopted later on.
Nagasone Okimasa has made swords with Kotetsu. He spent most of his life producing swords of his mentor.
Kotetsu has been making swords for 20 year which is not a long period of time yet there are quite an amount of katana existing.
Therefore it is most likely that Okimasa and other wordsmiths has helped making swords for Kotetsu.
One of the reason that made Kotetsu so famous is because of the sharp and bright ha and fine jigane.
Once on the auction in London, I was impressed by the bright ha of KOmetsu and the high quality jigane. It is over 30 years ago but
it is still burnt in my mind.
Now this Nagasone Okimasa is wakizashi but the fine jigane and the bright hamon is no different of Nagasone Kotetsu. It is
a masterpiece indeed. We highly recommend this blade.
NBTHK Tokubetsu Hozon paper
Aoi Art estimation paper : whole Oshigata.