Ordering number: 16782
Katana in Shirasaya with Koshirae(NBTHK Tokubetsu Hozon Paper)
Signature : Ogasawara Shi Nagamune Saku
Okuyama Shi Masatomo Ibo Motte Tetsugyoku 50pen Kitae Kore
Jokyo 3 Nen 12 Gatsu Hi(December 1686)
Shinto: Jyo Saku: Musashi
(We divide 4 sections for each sword as Saijyo saku, Jyojyo saku Jyo saku and regular saku)
This sword belongs to Jyo saku ranking.
The blade was polished.
Habaki: Gold foiled single Habaki.
Blade length: 69.8 cm or 27.48 inches.
Sori :1.8 cm or 0.70 inches.
Width at the hamachi: 2.75 cm or 1.08 inches.
Width at the Kissaki: 1.78 cm or 0.70 inches.
Kasane : 0.62 cm or 0.24 inches.
Era : Edo period, Jokyo era.(December 1686)
Shape : Rather narrow width and regular thickness blade.
Jigane : Itame Hada well grained with Jinie attach. There are also fine Masame.
The Jigane is clear.
Hamon : Suguha with small Notare-Ba. The Ha is bright.
Special feature: Ogasawara Nagamune(長宗) is a son of Ogasawara Nagamune(長旨).
Both signatures bear a close resemblance to each other.
A theory says that the two of them are the same person.
He was called as Sahee.
The signature is smaller than other swordsmiths. It is characterized by the Suguha Hamon.
There is a production date as “Jokyo 3 Nen 12 Gatsu Hi (December 1686)”. That is something rare.
We guess that Mr. Okuyama Shi Masatomo was a member of Fujiwara Kitake Ii family.
Saya : Black Roiro Sendan Kizami Saya.
Tsuba : Iron Tsuba, Kiri Mon and arabesque with gold color.
Menuki : Daikoku God is engraved with gold color.
Fuchikashira: Copper Daikoku God is engraved with gold color.
Kozuka: Shakudo, chicken is engraved with gold color.
Kogatana: There is a signature “Monju ?? Kanetsune”.
Kogai: Shakudo, chicken is engraved with gold color.
NBTHK Tokubetsu Hozon Paper (Issue latter)
Aoi Art estimation paper