Ordering number: 23646
Katana in Shirasaya(NBTHK Tokubetsu Hozon Token)
Signature :Mumei (Hōju)
無銘(宝寿)
(We divide 4 sections for each sword as Saijyo saku, Jyojyo saku Jyo saku and regular saku)
This sword belongs to Jyo Jyo Saku ranking.
Polished.
Habaki: Copper double Habaki.
Blade Length: 2 shaku 0 sun 2 bu (61.02 cm) (approximately 25.98 inches)
Curvature: 5 bu (1.515 cm) (approximately 0.57 inches)
Peg Hole: 1
Base Width: 2.92 cm (approximately 1.15 inches)
Tip Width: 2.11 cm (approximately 0.83 inches)
Thickness: 0.65 cm (approximately 0.26 inches)
Total Weight of Sword: 620 grams (approximately 1.37 pounds)
Era: From the late Kamakura period to the Nanboku-chō period
Shape: This piece has a wide body, a firm thickness, and a slightly deep curvature, making it a well-balanced work with a slightly elongated tip.
Jigane: The steel surface (jihada) shows a well-formed itame hada pattern and reflects light nicely.
Hamon: The temper line (hamon) has a deep nioiguchi and a soft, wavy pattern, with the hamon irregularly undulating along the edge.
Features: Hōju was a swordsmith who worked from the middle of the Kamakura period and is believed to have been active during the Meitoku era as well. There are very few well-aged pieces attributed to him, making it unclear when this sword was actually made. The well-formed itame hada pattern and the reflective jihada evoke a sense of the era, likely dating back to the
late Kamakura period to the Nanboku-chō period.
Aoi Art’s Comment: The work known as Hōju originated in the Tohoku region and has been
produced since the middle of the Kamakura period. This piece has a wide nioiguchi, which is
unusual for ancient swords. Generally, the hamon on older swords tends to be lower, making
this unique. Although it is unsigned (mumei), it is a well-made and excellent piece.
NBTHK Tokubetsu Hozon Token
Aoi Art estimation paper
Whole Oshigata
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