Previous answer is
Mumei (Senjuin)
無銘(千手院)

Features: Although the oshigata published in the Juyo Token records gives the impression of a rather plain suguha, the actual blade displays remarkably rich hataraki throughout the hamon. According to the Japanese Sword Museum, the Senjuin school is regarded as the oldest of the Yamato traditions, with origins dating back to the Heian period. This sword is identified as a work of the late Kamakura period. Though greatly shortened and unsigned, it retains a slightly elevated shinogi, broad construction, vestiges of koshi-zori, and a medium-length kissaki. The hamon is basically suguha, heavily covered with fine nie, and enlivened with ko-ashi, kinsuji, yubashiri, sunagashi, uchinoke, and vigorous hakikake. In addition to its outstanding workmanship, the blade possesses an elegant and brilliant character.

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Appraisal Quiz #908 (August 1st, 2026)
Who made this sword do you think ?
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Blade Length: 66.7 cm (26.26 in).
Curvature: 1.5 cm (0.59 in).
Mekugi Hole: 3.
Width at Base (Motohaba): 3.07 cm (1.21 in).
Width at Yokote: 2.05 cm (0.81 in).
Thickness of rim (Kasane): 0.71 cm (0.28 in).
Sword Weight: 715 g.
Shape: An ō-suriage, unsigned katana with standard curvature and a slightly elongated kissaki.
Jigane: Well-forged ko-itame hada with active chikei, displaying prominent shirake-utsuri.
Hamon: Nioi-deki suguha with nijūba. Bright ko-ashi are clearly visible, while the interior of the hamon shows soft hataraki with both nijūba and yō. The boshi enters a gentle midare before finishing in a hakikake tip.

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Answer will be posted at next Appraisal Quiz.

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