Previous answer is
Mumei (Hasebe)
無銘(長谷部)

Features: Hasebe Kunishige was a swordsmith active during the Nanbokucho period, around 1345 (Jōwa era).
This blade has a wide nakago with a mitsu-mune structure and is thought to have some relation to his predecessors, Akihiro and Hiromitsu.
The hitatsura hamon seen in this blade is a unique feature produced only by a small number of swordsmiths.

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Appraisal Quiz #879 (January 10th, 2026)
Who made this sword do you think ?
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Blade Length: 67.2 cm (26.46 in)
Curvature: 2.1 cm (0.83 in)
Mekugi Hole: 3
Width at Base (Motohaba): 3.23 cm (1.27 in)
Width at Yokote (Sakihaba): 2.15 cm (0.85 in)
Thickness of rim (Kasane): 0.68 cm (0.27 in)
Sword Weight: 840 g
Shape: A blade with wide mihaba, thick kasane, and an elegant curvature.
Jigane: Ko-itame hada.
Hamon: A vigorously undulating choji-midare that crosses the shinogi line, mixed with kawazuko-choji and tama-yaki.

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Answer will be posted at next Appraisal Quiz.

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