AS25223 Wakizashi: Yamato Daijo Yasusada Saku(NBTHK Tokubetsu Hozon Token)

Wakizashi in Shirasaya with Koshirae (NBTHK Tokubetsu Hozon Token)

Signature: Yamato Daijo Yasusada Saku

Shinto: Saijo O-wazamono (Ryowazamono): Musashi

We divide 4 sections for each sword as Saijyo Saku, Jyojyo Saku, Jyo Saku and Regular Saku.
This blade is ranked as Jyojyo Saku for the work of Yamato Daijo Yasusada.

Habaki: Single-layer silver
Blade Length: 54.6 cm (21.50 in)
Curvature: 1.0 cm (0.39 in)
Mekugi Hole: 2
Width at Base (Motohaba): 3.01 cm (1.18 in)
Width at Tip (Sakihaba): 2.06 cm (0.81 in)
Thickness of rim (Kasane): 0.68 cm (0.27 in)
Sword Weight: 555 g
Era: Edo period, around Kanbun (circa 1661–1673)

Shape: The blade has a standard width and thickness, shallow curvature, and a slightly extended kissaki (tip).
Jigane: A refined and tight ko-itame hada.
Hamon: Nioi-based gunome-midare with bright and clear activities including kinsuji and sunagashi. The boshi turns sharply and ends with a sweeping finish.

Features: Yamato no Kami Yasusada is believed to have been a student of Yasutsugu or, like Kotetsu, a disciple of Izumi no Kami Kaneshige. He is known as the swordsmith of Okita Soji of the Shinsengumi. Many of his works bear cutting test inscriptions by Yamano Kaemon and others.
This piece is a rare work made before Yasusada received the title of Yamato no Kami. The deep and clear nioiguchi and the unique yasurime (file marks) are particularly remarkable.

Koshirae:
Tsuba: Iron plate carved with tree motif. Signature: Shoami
Fuchikashira: Shakudo nanako-ji with flower and bird design
Menuki: Plant motif
Saya (Scabbard): Lacquered in a red and black mixed pattern

NBTHK Tokubetsu Hozon Token Certificate
Aoi Art estimation paper with whole oshigata