Previous answer is
Mumei (attributed to Den Cho Aritoshi)
無銘(伝　長有俊）

Features: The smith referred to as Chōbei no Jō likely crafted swords in the style of Jōshū Toba. Nagayoshi is believed to be a shortened form of Chōbei Aritoshi.

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Appraisal Quiz #815 (October 5th, 2024)
Who made this sword do you think ?
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Blade length: 66.0 cm (25.98 in)
Curvature: 1.2 cm (0.47 in)
Mekugi holes: 3
Width at base: 2.7 cm (1.06 in)
Width at tip: 1.99 cm (0.78 in)
Thickness: 0.54 cm (0.21 in)
Sword weight: 610 g (1.34 lbs)
Shape: shallow curvature and an extended tip.
Jigane: Fine ko-itame hada, well-forged with excellent jigane, showing strong utsuri.
Hamon: A straight nioi-deki line with active ko-ashi and ha.
Boshi: Gently turning back with a small round return (komaru).

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Answer will be posted at next Appraisal Quiz.

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