Dai Sho: Bizen Osafune Sukenaga
2017/01/31
Dai Sho in Koshirae(NTHK estimation paper)
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Dai : Katana 
Signature: Bizen Osafune Sukenaga
Kaei 2nd Year August 
The blade was polished.
Habaki: Silver Single Foiled
Blade length :  57.88cm or  57.88inches.
Sori : 1.56 cm or  0.61inches.
Mekugi: 1
Width at the hamachi : 2.25cm or 0.89 inches.
Width at the Kissaki :  1.7cm or  0.67inches.
Kasane :  0.6cm or  0.24inches.
Era :  Late Edo period.
Shape : It is wide and thick elegant shape katana. It is short size for katana
which also could be described as O-wakizashi.
Jitetsu : Koitame hada well grained with jinie attached. It is Muji style piece.
Hamon : Nie structure starting from suguha at the hamachi and gradually becomes gunome midare. Boushi is round end.  
Special feature :  Daisho Issaku koshire and the inside Sukenaga is also Sukenaga piece.
Generally when wearing a sword to the castle, people used short size daisho. The tsuka kashira is usually tsuno style. 
Koshirae :
Tsuba : Mokko shape iron tsuba
Fuchi; Shakudo nanakoji plate with peony design engraved and inlayed with gold.
Saya : It is dark brown ishimeji saya
Menuki : Shakudo plate with warrior design engraved and inlayed with gold.
Kozuka: Shakudo nanakoji plate with warrior design engraved and inlayed with gold. 
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Sho : Wakizashi
Signature: Bizen Osafune Sukenaga
Kaei 2nd Year August 
The blade was polished.
Habaki: Silver Single Foiled
Blade length :  30cm or  11.81inches.
Sori : 0.78cm or  0.3inches.
Mekugi: 1
Width at the hamachi : 2.24cm or 0.88 inches.
Width at the Kissaki :  1.74cm or  0.69inches.
Kasane :  0.74cm or  0.29inches.
Era :  Late Edo period.
Shape : It is small size daisho koshirae wakizashi.
Jitetsu : Koitame hada well grained with jinie attached. It is Muji style piece.
Hamon : Nie structure starting from suguha at the hamachi and gradually becomes gunome midare. Boushi is round end.  
Special feature :  Daisho Issaku koshire and the inside Sukenaga is also Sukenaga piece.
Generally when wearing a sword to the castle, people used short size daisho. The tsuka kashira is usually tsuno style. 
Koshirae :
Tsuba : Mokko shape iron tsuba
Fuchi; Shakudo nanakoji plate with peony design engraved and inlayed with gold.
Saya : It is dark brown ishimeji saya
Menuki :  Shakudo plate with warrior design engraved and inlayed with gold.
Kozuka: Shakudo nanakoji plate with warrior design engraved and inlayed with gold. 
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NTHK estimation paper
Price : 380,000 JPY-











