Previous answer is
Mumei (attributed to Shigezane)
無銘(伝重真)

Features: Shigezane was a swordsmith active during the Kenmu period (1334) in the late Kamakura era and became renowned in the late Muromachi period. His works exhibit well-forged ko-itame hada with utsuri.

=====================================
Appraisal Quiz #812 (September 14th, 2024)
Who made this sword do you think ?
=====================================

Blade length: 71.1 cm (28.00 in)
Curvature: 2.8 cm (1.10 in)
Mekugi holes: 2 (one filled)
Width at base: 3.00 cm (1.18 in)
Width at tip: 2.25 cm (0.89 in)
Thickness: 0.75 cm (0.30 in)
Sword weight: 705 g
Shape: Wide blade, originally a large naginata, with bohi on both sides and bonji carvings. The blade shows characteristics of having been a large naginata.
Jigane: Well-forged koitame-hada, soft and slightly viscous, with visible shirake utsuri.
Hamon: A soft suguha that gently returns in a rounded manner at the tip.

=====================================

Answer will be posted at next Appraisal Quiz.

=====================================

(Please acknowledge not replying to mail about Appraisal Quiz by our convenience.)