Previous answer is
Mumei (Sengo Masashige)
無銘 (千子正重)

Features: Sengo Masashige's father was Muramasa, and their signatures and nakago are similar.
This swordsmith is said to be the son of Muramasa and a disciple of Sengo Muramasa,
with a style very similar to Muramasa's. While Muramasa's hamon is subdued,
this piece is bright and clear. Additionally, the Muramasa school is known for producing many tanto,
but katana are extremely rare. This piece, a katana, is therefore quite exceptional.
The hada shows a large flowing masame, displaying Mino characteristics.
We highly recommend this piece, which closely resembles the works of Muramasa.

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Appraisal Quiz #802 (July 6th, 2024)
Who made this sword do you think ?
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Blade Length: 66.6 cm (26.22 in)
Curvature: 2.1 cm (0.83 in)
Mekugi Hole: 3
Width at Base: 2.66 cm (1.05 in)
Width at Tip: 1.98 cm (0.78 in)
Thickness: 0.64 cm (0.25 in)
Sword Weight: 595 grams
Shape: The blade is suriage with bo-hi on both sides, has curvature, a slightly long boshi, and an excellent form.
Jigane: Itame with chikei and utsuri appearing.
Hamon: Suguha with gunome, having a soft nioiguchi, and a bright and clear hamon with character.

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Answer will be posted at next Appraisal Quiz.

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