Wakizashi in Shirasaya with Koshirae (NBTHK Tokubetsu Hozon Token.)
Signature : Shinano Daijyo Fujiwara Tadakuni (First generation)
Shinto : Jyosaku ranking : Inaba province : Wazamono cutting test ranking.
The blade was polished.
Blade length : 51.52 cm or 20.28 inches.
Sori : 1.35 cm or 0.53 inches.
Mekugi : 1
Width at the hamachi : 3.18 cm or 1.25 inches.
Width at the Kissaki : 2.27 cm or 0.89 inches.
Kasane : 0.67 cm or 0.26 inches.
Era : Edo period Kanei era.
Shape : The blade is wide(3,18cm) and thick healthy blade.
Jitetsu : Koitame had well grained with jinie attach beautiful texture.
Hamon : Konie deki gunome midair and cyoji midair mixed with thick nioikuchi.
In Hamon, sunagashi and kinsuji work.
Special feature : Shinano Daijyo Fujiwara Tadakuni was called Yamamoto Hachidaiyu and a student of the Dewa Daijyo Kunimichi and helped him for making swords.
Kanei era, he moved to Inshu province and changed his name to Tadakuni and after that Kanei 11th August, he got the title of Sinano daijyo. He passed away Kanbun 6.
Historical background : 1637 Kanei 14th Shimabara no Ran happened.(revolution)
At early Edo period, Daimyo Harunobu Arima governed Amakusa but he tried to severe tax was collected.
Religion pressure also piled up and fought stubbornly,
Farmers and some high ranking samurai Amakusa shiro fought against Daimyo but defeated by the Shogunate army.
Shimabara seigneur Katsuie Matsukura who collected a severe tax against farmers and religious for christ was beheading for the Shogunate.
But by this event, Tokugawa shogun decided to broke off diplomatic relations with Portugal because the reason this issue was made by christianity.
Tsuba : On the Sea cucumber shape, gold Nunome zogan(inlay) was done.
Fuchikashira : On the syakudio nanako plate, dragon and cloud are engraved with gold color.
Saya : Black roar saya.
Menuki : A dragon is engraved with gold color.
Kozuka : On the syakudo nanako plate, autumn plants are engraved with gold color.
NBTHK Tokubetsu Hozon Token
Aoi Art estimation paper : whole Oshigata.