Previous answer is
　 Bizen Koku Ju Osafune Sukesada Saku.
Eiroku 11 Nen 2 Gatsu Hi
備前國住長船祐定作
永禄十一年二月日

Special feature : his sword depicts a turbulent sea-like appearance with a deep nioiguchi, displaying vigorous upper and lower movements, showcasing exceptional craftsmanship. The boshi (tempered edge) is round and pointed, returning towards the center.
The original homeland of this sword is Himeji, Harima Province. The distant ancestor is Awatagutaguchi Kunitsuna, who migrated to Kyoto and later came to Osaka.

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Appraisal Quiz #760 (September 16th, 2023)
Who made this sword do you think ?
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Blade Length: 62.42 centimeters (24.57 inches)
Curvature: 1.52 centimeters (0.60 inches)
Peg Hole: 1
Width at the Base (Motohaba): 3.11 centimeters (1.22 inches)
Width at the Tip (Sakihaba): 1.94 centimeters (0.76 inches)
Thickness (Kasane): 0.69 centimeters (0.27 inches)
Sword Weight: 530 grams
Shape : The sword exhibits a healthy width and thickness with a slightly deep curvature, and the tip extends gracefully.
Grain Pattern (Jigane): The jigane is exceptionally well-forged, displaying a clear skin pattern.
Temper Pattern (Hamon): The hamon resembles a direct temper line with fine ko-midare (small irregular waves) that work well. The boshi (temper pattern at the tip) has a deep, rounded return.

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