Ordering number:24030

Katana in Shirasaya with Koshirae (Tokubetsu Hozon Token, NBTHK Tokubetsu Kicho Token)

Signature: Bizen Osafune Ju Yokoyama Sukekane
Ansei 7 Nen 2 Gatsu Hi (February 1860)
備前長船住横山祐包
安政七年二月日

We divide four sections for each sword as Saijyo Saku, Jyojyo Saku, Jyo Saku, and Regular Saku.
This work is ranked as Jyojyo Saku.
Habaki: Single-layered gold-covered habaki
Blade Length: 70.4 cm (27.72 in)
Curvature: 2.2 cm (0.87 in)
Mekugi Hole: 1
Width at Base (Motohaba): 3.2 cm (1.26 in)
Width at Tip (Sakihaba): 2.05 cm (0.81 in)
Thickness (Kasane): 0.7 cm (0.28 in)
Sword Weight: 695 g
Era: Late Edo period, Ansei 7 (1860)
Shape: A slightly thick blade with deep curvature and an extended kissaki.
It retains its original ubu-ha (unpolished part near the habaki).
Jigane:Finely forged ko-itame hada, resulting in an exceptionally refined steel texture.
Hamon: Begins with a suguha at the hamachi, then transitions into a gunome-midare.
The pattern consists of fine ko-gunome and chōji-midare, forming a continuous wave.
The boshi is somewhat large and returns roundly.

Features: Many of Yokoyama Sukekane's works are inscribed as the 58th generation descendant of Tomonari,
but this particular piece does not bear that inscription.
Instead, it is signed on the ura side with the date Ansei 7, February (1860).
The hamon begins as suguha but transitions into a unique gunome-chōji-midare,
showcasing the distinctive chrysanthemum chōji pattern.
This style was pioneered by Yokoyama Sukenaga and later became a signature of the Yokoyama school.
Its intricate and elegant design made it a hallmark style passed down to his disciples.

Aoi Art’s Comment: The Yokoyama school was known for producing chrysanthemum-themed hamon,
even more so than Yokoyama Sukenaga himself.
This is an extremely refined piece, demonstrating an exceptional level of craftsmanship.
The beauty and precision of this work invite admiration for the skill required to create it.

NBTHK Tokubetsu Hozon Token Certificate
NBTHK Tokubetsu Kicho Token Certificate
Aoi Art’s Estimation Paper
Whole Oshigata

Price:1,200,000JPY

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