AS25070 Wakizashi:Yamato no Kami Yasusada (NBTHK Tokubetsu Hozon Token) (NBTHK Tokubetsu Kicho Token)

Wakizashi: Shirasaya (NBTHK Tokubetsu Hozon Token) (NBTHK Tokubetsu Kicho Token)

Signature: Yamato no Kami Yasusada
大和守安定

Shinto: Ryowazamono: Jyo Saku: Musashi
(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 the works of Yamato no Kami Yasusada.
Habaki: Silver single-piece
Blade Length: 54.2 cm (21.34 in)
Curvature: 0.9 cm (0.35 in)
Mekugi Hole: 1
Width at Base (Motohaba): 3.24 cm (1.28 in)
Width at Tip (Sakihaba): 2.1 cm (0.83 in)
Thickness (Kasane): 0.75 cm (0.30 in)
Sword Weight: 610 g (1.34 lb)
Era: Edo period, around Kanbun era (1661–1673)
Shape: A Wakizashi with a solid width and thickness, slightly shallow curvature, resembling the style of Kotetsu, with a slightly extended kissaki (tip).
Jigane: A work with a well-visible grain structure and superior jigane.
Hamon: Nie-deki with gunome-midare, featuring a deep nioiguchi, rounded boshi, and deep kaeri.

Features: Yamato no Kami Yasusada was originally from Kii province and was a disciple of Izumi no Kami Kaneshige. He initially lived in the Shirogane district of Kanda, Edo, and also produced swords in Edo’s Toshima district. His family name was Tobita, commonly known as Sohee. He is famous for Ryowazamono sharpness, and many of his swords were used for test cutting by Yamano Kaemon and Yamano Kanjuuro. His blade sharpness is said to be the best among Shinto swords.

NBTHK Tokubetsu Hozon Token Certificate
NBTHK Tokubetsu Kicho Token Certificate
Aoi Art estimation paper: Whole Oshigata