Ordering number: 22293
Katana in Shirasaya with Koshirae(NBTHK Tokubetsu Hozon Token)
Signature :Mumei(judged as Unju)
Chu Koto: Jyo saku:Bizen
(We divide 4 sections for each sword as Saijyo saku, Jyojyo saku Jyo saku and regular saku)
This sword belongs to Jyo Jyo saku ranking.
habaki:gold color single habaki.
The blade was polished.
Blade length : 69.9 cm or 27.51inches.
Sori :1.14 cm or 0.44inches.
Mekugi : 4
Width at the hamachi : 2.92cm or 1.14inches.
Width at the Kissaki : 2.15cm or 0.84inches.
Kasane : 0.57cm or 0.22inches.
The weight of the sword 670 grams
Era : The Joji era, the Nambokucho period. Around 1362.
Shape : Osuriage Mumei. The blade is normally broad and thick with adequate Sori and slightly longer Kissaki. There are 2 lined Hi on the both sides.
Jigane : Koitameha mixed with Komokumehada with Jinie. Beautiful surface.
Hamon : Niedeki, mainly Suguha with lots of Koashi. The blade is bright. Boshi is Midarekomi and ends with Hakikake.
Special feature: Unsho, Unji, and Unju are swordsmiths from Bizen Kuni Ukannosho and made many swords from the lade Kamakura period to the Nambokucho period. They are called as Ukan or Ukai, and sometimes Un-rui(rui=group) because they all have kanji of “Un” in their names. They are from Bizen but their style is different from Bizen-mono, and their style is very similar to Aoe school. There are also some works with Yamato atmosphere.
Tsuba: Shakudo Ishimeji Tsuba. Chrysanthemum and buttefly are engraved with Shakudo color and Aogai. The rim is covered by Shakudo.
Fuchikashira: On Shakudo plate, autumn insects and plants are engraved with gold color. Mei: Mino Ju Masahiro
Saya: Aogai Chirashi Saya with patterns painted in black.
Menuki: Eggplant is engraved with gold color.
Kojiri: On Shakudo plate, waves and birds are engraved with gold color.
From Aoi Art: Very rare Koto Unju with beautiful Koshirae. We seldom see Koto Unju. We truly recommend this to you.
NBTHK Tokubetsu Hozon Token paper
Aoi Art estimation paper: whole Oshigata by Ayaka Tsuruta