Katana in Shirasaya with Koshirae(NBTHK Tokubetsu Hozon Paper)
Signature : Shoji Chikuzen Daijo Naotame Saku
Tenpo 15 nen Chushu(The middle of autumn 1844)
ShinShin to: Saijo Saku: Musashi province.
(We divide 4 sections for each sword as Saijyo saku, Jyojyo saku
Jyo saku and regular saki)This sword belongs to Saijo Saku ranking.
The blade was polished.
Habaki : silver single habaki.
Blade length : 76.0 cm or 29.92 inches.
Sori : 1.6 cm or 0.62 inches.
Mekugi : 2
Width at the hamachi : 3.35 cm or 1.31 inches.
Width at the Kissaki : 2.34 cm or 0.92inches.
Kasane : 0.76 cm or 0.29 inches.
Era : Edo period, Tenpo era.
Shape: Wide and thick with large Kissaki, bit Machiokuri Katana.
Jitetsu: Itame Hada well grained and spiral Jigane mix with Jinie attach. There are Chikei. Soden-fu Jigane.
Hamon: Nie Deki, Gunome Midare with thick Nioikuchi. In Ha, there are Sunagashi and Kinsuji.
Boshi is Saki Togari gokoro round shape. The thick Nioi. There are also Sunagashi and Kinsuji.
Special feature :Naotane, born Shoji Minobei in 1778 or 1779 at Yamagata in Dewa province, considering
from his title Taikei used at a later date, his birthday is possibly 15th July,
went to Edo and become a pupil of Suishinshi Masahide. The Akimoto family in Yamagata province
retained Naotane around 1812. Naotane got the title Chikuzen-Daijo in 1821and stepped up to
the Mino (No) Kami in 1848. As building up a solid reputation, he got many invitations to
forge sword in various places. He added the name of place to inscribe the signature.
Naotane passed away in 1857, aged 79.
Naotane could make a variety of styles: Bizen-den, Soshu-den, Yamashiro-den and Yamato-den.
He was good at Bizen-den and Soshu-den in particular. His swords are ranked at the highest rank
called Saijo-saku in the last days of the Tokugawa shogunate. Especially his swords forged
in the Tempo era (1830 to 1844) called Tempo-uchi are highly appreciated as his best examples attained maturity.
This blade is from his mature period. This blade looks like Naotane of the NBTHK Juyo blade.
This blade has stillness and motion atmosphere.
Koshirae: of former days.
Tsuba: Octagonal shape iron Tsuba.
Fuchikashira: Shakudo Nanako.
Saya: Red color Saya.
Menuki: Shakudo, mouse and fan(?) engraved.
NBTHK Tokubetsu Hozon paper.
Aoi Art estimation paper : whole Oshigata.