Katana in Shirasaya with Koshirae (Blade is NBTHK Tokubetsu Hozon Token.)(Tsuba is NBTHK Hozon Tosogu.)

Signature: Mumei (unsigned)(Den Iwato Ichimonji)

Blade length : 70.1 cm or 27.59 inches.
Sori : 1.2 cm or 0.47 inches.
Mekugi: 2
Width at the hamachi : 3.06 cm or 1.20 inches.
Width at the Kissaki : 2.02 cm or 0.79 inches.
Kasane : 0.65 cm or 0.25 inches.
Era : Late Kamakura period. About Shochu era.(about 1324)
shape:The bvlade is rather wide and thick with nice sori nice looking shape.
Jigane:Itame hada and mokume hada mized with jinie attach and thin Utsuri appear on the Ji.
Hamon:Small Niededki and nioideki mixed Cyoji midare hamon up and down.
In Ha, there are many sunagashi, ashi, Yo scatter in Ha.

Special feature: Iwato Ichimonji is one of the Ichimonji school.
Iwati Ichimonji is called Shochu Ichimonji and made many swords at Wakigun Iwato province.
Students of Yoshioka ichimonji Sukeyoshi, Yoshiie and Yoshiuji and
others were making Ichimonji swords at Shochu era.
Even right now modern times, Tatara which produced Japanese steel exists at that area.
From this active elegant hamon, it looks like typical Yoshioka ichimonji.
NBTHK judge that the blade is one of Ichimonji which is rather difficult to obtain recently.
Historical back ground: At the end of Kamakura period Shochu no Hen
(battle between Emperor Godaigo and Bakuhu)
Emperor Godaigo failed in the overthrow of the kamakura Shogunate and Godaigo’s aide Hino Suketomo was banished.

Koshirae: Uchigatana Koshirae. This Koshirae is well balanced with high
quality sword fittings.
Tsuba: Kokinko (NBTHK Hozon Tosogu) On the massive nice shakudo
plate, waves and flowers are engraqved with gold inlay(uttori).
Fuchikashira:On the shakudo nanako plate, flowers designe are engraved with gold color.
Menuki:On the syakudo plate, flowere are engraved with gold color.
Kurikata:On the shibuichi plate, flowers are engraved with gold color.
Saya:Black roiro saya.

Blade is NBTHK Tokubetsu Hozon Token.
Tsuba is NBTHK Hozon Tosogu.
Aoi Art estimation paper : whole Oshigata.