Previous answer is
Mumei (attributed to Reisen Sadamori)　
無銘(冷泉貞盛)　

Features: During the Nanbokucho period, both Sagemonji and Kongobei schools were active in Chikuzen. Sadamori belongs to the latter school. A tanto inscribed “Chikushu Reizei Sadamori, dated January of Shohei 25” (a Juyo Bijutsuhin) exists and serves as an important reference for evaluating Reizei Sadamori’s work. Created 677 years ago in 1346, the piece reflects the Yamato style in its jigane, with a slight golden-blackish hue mixed with dark undertones, incorporating fine chikei and a tight nioi-guchi, with a narrow suguha hamon.

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Appraisal Quiz #820 (November 9th, 2024)
Who made this sword do you think ?
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Blade Length: 70.6 cm (27.8 in)
Curvature: 2.3 cm (0.9 in)
Mekugi Holes: 2
Width at Base (Motohaba): 2.76 cm (1.09 in)
Width at Tip (Sakihaba): 1.78 cm (0.70 in)
Thickness (Kasane): 0.54 cm (0.21 in)
Sword Weight: 540 grams
Shape: Regular width and thickness Katana with deep Sori.
Jigane: The small itame grain is well-forged, resulting in a beautiful jigane.
Hamon: Based on a suguha style with active ko-ashi, a deep nioiguchi.

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Answer will be posted at next Appraisal Quiz.

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