Previous answer is
Mumei (Naoe Shizu)
無銘(直江志津)

Features:　"Shizu" was originally the name of a place in Mino Province, but when Kanemitsu—one of the ten great disciples of Masamune—moved to the area and began forging swords there, he came to be known as Shizu Saburo Kaneuji, taking the place name.
Later, his disciples such as Kanetomo, Kanetsugu, Kaneshige, and Kanenobu relocated to Naoe in Mino Province, and they came to be referred to as "Naoe Shizu."
This piece is an excellent work, with a well-tempered jigane and hamon, displaying a bright and clear appearance.

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Appraisal Quiz #865 (September 20th, 2025)
Who made this sword do you think ?
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Blade Length: 66.5 cm (26.18 in)
Curvature: 2.91 cm (1.15 in)
Mekugi Hole: 4
Width at Base (Motohaba): 2.91 cm (1.15 in)
Width at Tip (Sakihaba): 1.89 cm (0.74 in)
Thickness of rim (Kasane): 0.79 cm (0.31 in)
Sword Weight: 655 g
Shape: The blade has standard width, thick kasane, and deep curvature.
It features a bōhi (full-length groove) and an extended kissaki, showing a refined and elegant shape.
Jigane: Itame mixed with mokume, forming a well-forged and densely packed texture.
A faint utsuri (shadow pattern) appears.
Hamon: Nioi-based gunome-midare mixed with angular elements.
Features include ko-ashi, ha, ko-nie, and sunagashi.
The boshi turns back sharply with a pointed tip.

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Answer will be posted at next Appraisal Quiz.

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