I also include AI full translation of Juyo Papers. As it is AI translation, I'm sorry if there are any errors..
Yellow Paper:
22nd Important Sword Designation
Designation Document
One naginata-naoshi katana by Motoshige
Blade length: 66.7 cm
Curvature: 1.9 cm
Shape:
Naginata-naoshi, with iori-mune (ridged back).
Forging:
Itame hada mixed with large itame hada, featuring flowing grain patterns. The steel surface shows prominent activity, with ji-nie (tiny martensitic particles), chikei (steel lines), ashi (leg-like features), yo (leaf-like patterns), and sunagashi (sweeping lines).
Engravings (Horimono):
Naginata hi (groove) with an additional auxiliary groove.
Nakago (Tang):
Greatly shortened (o-suriage), with a kuri-jiri (rounded) tip. File marks (yasurime) are katte-sagari (diagonal downwards). One mekugi-ana (peg hole).
Based on the examination by this association, this blade has been designated as an Important Sword.
Date of Designation: June 1
Organization: Nihon Bijutsu Token Hozon Kyokai (The Society for the Preservation of Japanese Art Swords)
President: Honma Junji
White Paper:
Naginata-Naoshi Katana
Unsigned (Mumei), Attributed to Den Motoshige
Date of Designation: June 1, Showa 49 (1974)
22nd Important Sword Designation
Owner: Hashimoto Naoji, Toyama Prefecture
Specifications:
Length: 68.7 cm
Curvature: 1.9 cm
Motohaba (Width at Base): 2.8 cm
Nakago Length: 19.0 cm
Nakago Curvature: 0.1 cm
Forging:
Itame hada mixed with large itame, showing a slightly coarse texture. Ji-nie (metallic particles) are present on the surface.
Hamon:
Straight (suguha) with ashi and yo, featuring frequent sunagashi (sweeping lines). Small nie (martensitic particles) are visible.
Shape:
Naginata-naoshi with iorimune (ridged back) and slight curvature.
Boshi (Tip):
Straight, yakitsume (tempered to the tip).
Engravings (Horimono):
Naginata hi (groove) with an additional groove, flowing downwards.
Nakago (Tang):
Greatly shortened (o-suriage), with kuri-jiri (rounded end). File marks (yasurime) are katte-sagari (diagonal downwards). One mekugi-ana (peg hole). Unsigned.
Explanation:
This work is a naginata-naoshi blade, which shows the typical characteristics of a naginata reshaped during the Nanbokucho period. It is attributed to Bizen Osafune Motoshige, and the style of craftsmanship strongly supports this attribution.