Dai Sho :Hirotsugu(Ko Aoe)/ Nobukuni(Shikibu jo)(NBTHK Tokubetsu Hozon Token)

Ordering number:23510

Dai Sho:

Dai: Katana in Shirasaya with Koshirae(NBTHK Tokubetsu Hozon Token)

Signature: Hirotsugu 弘次 (Ko-Aoe, 古青江)

Sayagaki written by Mr.Tanobe: Bizen no Kuni Hirotsugu. – There are two characters engraved at the tip of the tang. The prominent burl patterns are also skillfully rendered.
This smith is known to have worked during the early Kamakura period.

(We divide 4 sections for each sword as Saijyo saku, Jyojyo saku
Jyo saku and regular saku)This blade belongs to Jyojyo saku ranking.

Habaki: gold-plated double habaki
Blade Length: 66.8 cm (26.29 in)
Curvature: 2.1 cm (0.82 in)
Peg Holes: 3
Motohaba (Width at Base): 2.67 cm (1.05 in)
Sakihaba (Width at Tip): 1.46 cm (0.57 in)
Thickness: 0.58 cm (0.22 in)
Sword Weight: 500 grams

Era: Late Heian to the early Kamakura period, around 1200.
Shape: This sword has a slender, small point with a deep curvature towards the tip, giving it a graceful appearance. The signature on the ura(back) sede is a characteristic of Ko-Aoe.
Jigane: Fine ko-itame hada with utsuri.
Hamon (Temper Line): Small, active nie (martensite crystals) and a clear straight hamon, with a rounded and deep boshi (temper line at the tip).

Features: Hirotsugu is a renowned swordsmith from the Aoe school, dating back to around 1200 during the late Heian and early Kamakura periods. The Aoe school is known for its unique signature style, which has been passed down since the Heian
period.

Koshirae (Mountings):
Tsuba (Guard): Circular iron tsuba with carving of ears of rice.
Saya: The scabbard is made from kaigara (red stingray skin).
Menuki (Handle Ornaments): carving of bees.
Kozuka Kogatana: Fan and plant are carved.

From Aoi Art : This Yoshitsugu tanto is a highly valuable piece dating from the late Heian to early Kamakura periods. The scabbard is crafted from kaigara (red stingray skin) and the overall koshirae is meticulously made with high-quality
accessories.These swords are set of Daisyo sword and Koshirae.
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Sho: Wakizashi in Shirasaya with Koshirae(NBTHK Tokubetsu Hozon Token)

Signature: Nobukuni 信国 (Shikibu jo,式部丞)

(We divide 4 sections for each sword as Saijyo saku, Jyojyo saku
Jyo saku and regular saku)
This blade belongs to Jyojyo saku ranking.

Antique Sword: Superior Work; Yamashiro
Habaki: Gold foiled single Habaki.
Blade Length: 1 shaku 5 sun 3 bu (46.36 cm) (18.25 in)
Curvature: 3 bu (0.91 cm) (0.35 in)
Peg Holes: 2
Motohaba (Width at Base): 2.36 cm (0.92 in)
Sakihaba (Width at Tip): 1.52 cm (0.59 in)
Thickness: 0.58 cm (0.22 in)
Sword Weight: 280 grams
Era: Muromachi period, around 1429
Shape: This Wakizashi is slightly slender, but it has a well-defined
shape with a prominent curvature and extended point. The steel grain is fine ko-itame hada, and the hamon displays a mix of choji midare and gunome patterns with a deep boshi.

Features: Nobukuni was a Yamashiro school swordsmith who originated from the Nanboku-cho period and continued his work until the late Muromachi period. The work closely resembles that of the Rai school, with the second generation being known as
“Saemon-no-jo,” and the third generation as “Shikibu no Jo” during the Bunmei era.

Koshirae (Mountings):
Tsuba (Guard): Circular iron tsuba with carving of ears of rice.
Saya: The scabbard is made from kaigara (red stingray skin).
Menuki (Handle Ornaments): carving of bees.
Kozuka Kogatana: Fan and plant are carved.

From Aoi Art: This Nobukuni wakizashi is a valuable piece from the late Nanbokucyo to late Muromachi periods. While the hamon exhibits some variation, the steel grain is clear and refined. The “信” (Nobu) character in Nobukuni ’s signature may not be easily visible, but it is considered a well-crafted piece, and the koshirae is of decent quality.

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NBTHK Tokubetsu Hozon Token
Aoi Art estimation paper : whole Oshigata.

Price:3,500,000 JPY-.
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