AS25170 Katana:Sekishū Tsuwano Kanoashi-gō-ju Kazusa Kami Minamoto Mitsushige(NBTHK Hozon Token)

Katana: in Shirasaya (NBTHK Hozon Token)

Signature: Sekishū Tsuwano Kanoashi-gō-ju
Kazusa Kami Minamoto Mitsushige
石州津和野鹿足郡住
上総守源光重

We divide 4 sections for each sword as Saijyo Saku, Jyojyo Saku, Jyo Saku and Regular Saku.
This piece is ranked as Jyo Saku among the works of Kazusa no Kami Minamoto Mitsushige from Sekishū Tsuwano Kanoashi-gō.
Habaki: Silver single Habaki
Blade Length: 72.6 cm (28.58 in)
Curvature: 0.6 cm (0.24 in)
Mekugi Holes: 2
Width at Base (Motohaba): 3.27 cm (1.29 in)
Width at Tip (Sakihaba): 2.12 cm (0.83 in)
Thickness of rim (Kasane): 0.62 cm (0.24 in)
Sword Weight: 765 g
Era: Edo period, around Kanbun era (1661–1673)
Shape: This blade shows a slightly shallow curvature and an extended kissaki, typical of works from the Kan’ei to Kanbun periods.
Jigane: Well-forged ko-itame hada with a tight grain structure.
Hamon: Nie-deki gunome midare with soft round shapes, showing active ko-ashi.

Features: A long signature piece by a swordsmith from Iwami province during the Kanbun period.
With a blade length of approximately 72.6 cm, it is well-suited for Iai use.
The blade is solid, without flaws or defects.

NBTHK Hozon Token Certificate
Aoi Art Estimation Paper: Whole Oshigata