Gisuke-saku(義助作) | Katanahanbai.com

The smith who forged Otegine, one of the Three Great Spears of Japan.

Tanto
Gisuke-saku
短刀義助作

Item NO.	NO.K00267	Price	750,000JPY (Shipping not included.) HOLD
Paper	NBTHK Tokubetsu Hozon Paper (公財)日本美術刀剣保存協会特別保存刀剣鑑定書
Country	Suruga Province
Period	Late Muromachi period, around the Tenbun era (1532–1555)
Blade Length	23.2cm
Curve(Sori)	内反り
Bottom Width (Motohaba)	1.9cm
Bottom Thickness (Motokasane)	0.8cm
Keijo	Hira-zukuri with a mitsu-mune; the blade is slightly narrow with a thick kasane and uchizori (inward curvature).
Kitae	The ko-itame hada is tightly knit, covered with thick ji-nie, and shows prominent mizukage.
Hamon	The hamon is chū-suguha with ko-nie and a bright nioiguchi, ending in yakiotoshi at the machi.
Boushi	The bōshi runs straight, ending in ko-maru with a long kaeri.
Hori	Omote: Sō-no-kurikara (a stylized dragon entwined around a sword); ura: bonji (Sanskrit character).
Nakago	The nakago is ubu, with a ha-agari kurijiri tip; the yasurime are indistinct, and there is one mekugi-ana.
Accessories	Shirasaya with sayagaki by Tanobe Michihiro Sensei,Kinkise Niju habaki.
Details	Yoshisuke was a lineage of swordsmiths active in Shimada, Suruga Province, and was also known as Gojō Yoshisuke. It was one of the lineages belonging to the Shimada school and continued through successive generations from the mid-Muromachi period to the mid-Edo period. Yoshisuke is renowned as the smith who forged Otegine, one of the Three Great Spears of Japan. This blade was made by a Muromachi-period generation of Yoshisuke and is an exceptionally well-made early work, apparently modeled after the Rai school.
Notes	鞘書駿州島田義助三字銘有之直刃を端正に焼き出来優れ蓋し古作来物に私淑せし者敷干時乙未師走探山邉道識（花押）
Accessories	Shirasaya with sayagaki by Tanobe Michihiro Sensei,Kinkise Niju habaki.