AS25017 Katana:Naniwa Ju Gassan Sadakatsu Kinsaku (written seal mark)(NBTHK Hoozn Token)

Katana in Shirasaya(NBTHK Hoozn Token)

Signature: Naniwa Ju Gassan Sadakatsu Kinsaku (written seal mark)
浪華住月山貞勝謹作
Showa 12 Nen 3 Gatsu Kichijitsu
昭和十二年三月吉日

We divide works in to Saijo Saku, Jyojyo Saku, Jyo Saku,and Regular Saku.
This piece is ranked as Jyojyo Saku for Gassan Sadakatsu.

Habaki: silver single habaki with engraving
Blade Length: 68.2cm (26.85in)
Curvature: 1.8cm (0.71in)
Width at Base(Motohaba): 3.05cm (1.20in)
Width at tip(Sakihaba): 2.05cm (0.81in)
Thickness: 0.74cm (0.29in)
Blade Weight: 715g
Era: Murch,1937
Shape: A tachi with a slightly wide blade, deep curvature, and a somewhat short kissaki, showcasing a healthy condition with ubu-ba (original blade edge) remaining.
Jigane: Well-forged ko-itame hada with fine quality jigane.
Hamon: Nie-deki gunome-midare with a small round turn-back (ko-maru) at the boshi.

Features: Gassan Sadakatsu was the son of the first-generation Gassan Sadakazu and produced swords as a substitute for his father until Sadakazu’s later years. After his father’s passing, he demonstrated exceptional skill, crafting swords for the Imperial Family and dedicatory swords for Ise Shrine. He mastered various styles, including the Ayasugi-hada inherited from Sadakatsu.
This piece is exceptionally well-forged, representing the highest level of craftsmanship.

NBTHK Tokubetsu Hozon Certificate
Aoi-Art estimation Paper
whole Oshigata