Previous answer is
Hizen no Kuni ju Fujiwara Tadahiro
Auspicious day in August, Kanei 15 (1638)
肥前国住藤原忠広
寛永十五年八月吉日

Features: Because there is an ura-mei, it can be determined that this work was made when Tadahiro was 25 years old.
The inscription “Kanei 10 (1633), second month, auspicious day” bears the title Musashi Daijo, and the first stroke of the character “Tada” is shaped like a diamond.
This is considered the only way to distinguish between the first and second generations.
It is extremely rare and valuable that both the name and date are engraved on both sides.

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Appraisal Quiz #896 (May 9th, 2026)
Who made this sword do you think ?
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Blade Length: 70.8 cm (27.87 in).
Curvature: 1.2 cm (0.47 in).
Mekugi Hole: 2.
Width at Base (Motohaba): 2.97 cm (1.17 in).
Width at Yokote (Sakihaba): 1.86 cm (0.73 in).
Thickness (Kasane): 0.62 cm (0.24 in).
Sword Weight: 730 g.
Shape: Standard width and defined shinogi-ji.
Jigane: Fine ko-itame hada well forged with visible utsuri.
Hamon: Nie-deki gunome-midare actively tempered, with prominent kinsuji clearly visible.
The boshi turns back in a rounded form.

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Answer will be posted at next Appraisal Quiz.

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