Previous answer is
Mumei (Attributed to Kanenaga)
無銘(兼長)

Features: This sword is published in the Ōsaka Meitō Zufu (Osaka Famous Sword Catalog).
It belongs to the Nagayoshi school lineage, is classified as Ōwazamono and Jyo Saku, and dates to the Jōji era of the Nanbokucho period.
The blade exhibits gunome-midare with intense sunagashi and kinsuji appearing in the ha.
The kinsuji in particular is long and dynamic, making this a truly spectacular piece.
The hamon is bright and clear, and the activity within the blade is extraordinarily rare.
This sword is highly recommended.
The hamon on the kissaki is also intense, fully expressing the characteristics of the Nanbokucho period.

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Appraisal Quiz #857 (July 26th, 2025)
Who made this sword do you think ?
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Blade Length: 72.2 cm (28.43 in)
Curvature: 2.8 cm (1.10 in)
Mekugi Hole: 3
Width at Base (Motohaba): 2.77 cm (1.09 in)
Width at Tip (Sakihaba): 1.70 cm (0.67 in)
Thickness of Rim (Kasane): 0.69 cm (0.27 in)
Sword Weight: 695 g
Shape: The blade is wide with a deep curvature and a slightly extended kissaki (tip).
Jigane: Well-forged ko-itame with dense grain, showing clear utsuri.
Hamon: Fine choji-midare with active hataraki and small ashi entering the ha, boshi turns back with slight togari and irregular pattern.

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