Ordering number:AS24771
Tachi in Shirasaya (NBTHK Tokubetsu Hozon Token)
Signature: ?? (Unknown Signature) (Ko-Naminohira)
(銘不明)(古波平)
Inscription on the Saya :Ko-Naminohira Yukiyasu
Ubu Nakago with Signature – From the Hōgen Era (1156–1159)
A Fine Work – Blade Length: 2 shaku 4 sun 7 bu (75.0 cm)
Written in August, Showa 62 (1987), Year of the Rabbit
By Hon’ami Nisshu (with Kao, signature seal)
We divide 4 sections for each sword as Saijyo Saku, Jyojyo Saku, Jyo Saku, and Regular Saku.
This work is ranked as Jyojyo Saku among Ko-Naminohira swords.
Habaki: Silver-plated single-layered, engraved with a flowing water and maple leaf motif.
Blade Length: 75.0 cm (29.53 in)
Curvature: 2.5 cm (0.98 in)
Mekugi Hole: 2
Width at Base (Motohaba): 2.82 cm (1.11 in)
Width at Tip (Sakihaba): 1.50 cm (0.59 in)
Thickness (Kasane): 0.73 cm (0.29 in)
Sword Weight: 690 g (1.52 lbs)
Era: Late Heian to Early Kamakura Period
Shape:This tachi features a deep curvature and a slightly wavy kissaki, with an ubu-nakago (original, unaltered tang), allowing for a clear observation of its original form and shinogi-ji details from the time of its creation. The shinogi-ji activity is particularly well preserved.
Jigane:The ko-itame hada is well-forged, with utsuri appearing, characteristic of old Naminohira swords.
Hamon:A nioi-based suguha (straight temper line) with some slight clouding near the tip. The boshi is irregular.
Aoi Art’s Comment:This sword is rare for being in ubu-nakago condition, which allows us to see the original form clearly. It exhibits distinct characteristics of the Ko-Naminohira school, including a well-preserved sori (curvature). The hamon follows the traditional suguha style typical of the period and is considered a reasonably well-made example of its kind.
NBTHK Tokubetsu Hozon Token
Aoi Art Estimation Paper
Whole Oshigata
Auction Starting Price:1,450,000JPY
Place Bid
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