Previous answer is
Kanemoto (Magoroku)
兼元(孫六)

Features: Magoroku Kanemoto was the son of the first-generation Kanemoto and bore the title Magoroku. It is said that Magoroku Kanemoto had a fraternal bond with Izumi no Kami Kanesada.Magoroku Kanemoto was the son of the first-generation Kanemoto and bore the title Magoroku. It is said that Magoroku Kanemoto had a fraternal bond with Izumi no Kami Kanesada.
The NBTHK Tokubetsu Hozon certificate records it as (Magoroku).
It is a magnificent and rarely-seen masterpiece, with a single mekugi-ana and an ubu nakago (original tang).
In the sayagaki, Mr. Tanobe writes: "Noshu Akasaka Ju Magoroku Kanemoto; the second generation commonly known as Magoroku, bearing a two-character signature..."
As is well known, the works of Magoroku Kanemoto were famous even in their own time and were said to possess outstanding sharpness.
What makes this piece rare is its single mekugi-ana and ubu nakago.
We highly recommend acquiring it as a family heirloom.

=====================================
Appraisal Quiz #901 (June 13th, 2026)
Who made this sword do you think ?
=====================================

Blade Length: 82.7 cm (32.56 inches)
Curvature: 1.4 cm (0.55 inches)
Mekugi-ana: 2
Width at Hamachi (Motohaba): 3.52 cm (1.39 inches)
Width at Yokote (Sakihaba): 2.59 cm (1.02 inches)
Thickness at Habaki (Kasane): 0.77 cm (0.30 inches)
Blade Weight: 1,105 g
Shape: A magnificent and imposing katana with a wide mihaba, thick kasane, and deep curvature. The blade measures an impressive 82.7 cm (32.56 inches) in length.
Jigane: Well-forged ko-itame hada. The surface grain is clearly visible and can be appreciated throughout the blade.
Hamon: Ko-nie-deki gunome-midare. The boshi continues the irregular pattern and turns back in a small rounded tip (ko-maru).

=====================================

Answer will be posted at next Appraisal Quiz.

=====================================

(Please acknowledge not replying to mail about Appraisal Quiz by our convenience.)