Previous answer is
Mumei (Unsigned)(appraised as Sa Kunihiro, 左国弘)

Features: Chūkōto: Ryōwazamono: Jyojyo Saku: Chikuzen
The Samonji school, active in Chikuzen during the Nanbokucho period, was founded by the O-sa and included many distinguished smiths. This school established a distinctive Soshu-den style, characterized by a brilliantly clear Jigane and Hamon that differed from the conventional works made in Kyushu area. Among the group, Kunihiro was renowned for forging blades with flamboyant, irregular hamon. This blade is an excellent example of the school’s artistry, featuring a well-forged, nie-rich construction with abundant activity throughout the Jigane and Hamon. The boshi, sharply turning back, exemplifies the hallmark traits of the Samonji school.

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Appraisal Quiz #861 (August 23th, 2025)
Who made this sword do you think ?
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Blade Length: 75.0 cm (29.53 in)
Curvature: 1.6 cm (0.63 in)
Mekugi Hole: 1
Width at Base (Motohaba): 3.22 cm (1.27 in)
Width at Tip: 2.35 cm (0.93 in)
Thickness of rim (Kasane): 0.78 cm (0.31 in)
Sword Weight: 895 g
Shape: A wide blade with a thick and solid construction.
The boshi (tip) extends long.
Jigane: Finely forged ko-itame hada with well-developed ji-nie, resulting in a superior steel surface.
Hamon: Nie-based, rounded gunome-midare.
The boshi is also gunome-midare, forming a pointed tip and returning.

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