This entry for Norimitsu of the Oei era rests on a signed Bishu Norimitsu and dated Oei 33 (1426), second month, designated at the 37th session in 1991. The published sources observe that the Norimitsu blades usually encountered date from between Oei and . Yet the name goes back to the end of the period, to a pupil of Nagamitsu whose dated Kagen 3 survives. They then give the sequence: 「銘鑑ではこれを初代として、二代を延文頃、三代応永で家助の子とし、四代が永享頃、以降室町末期まで名跡の継承があったことを記している」 (the count the Kagen smith as the first generation, place a second around Enbun and a third in Oei as the son of Iesuke, and a fourth around Eikyo, with the name inherited to the end of the period).
The matters chiefly as a date. Until it appeared, no work of Norimitsu was known between the Kagen and the Oei era, so its documentary value is held to be very high. It falls in the Oei era to which the assign the third generation, although the paper itself does not number its maker.
In form the is with an , long for its width and thick, which the published sources call characteristic of Oei . The is tight, with fine thickly attached, , and a straight along the edge. The is a with a shallow feeling, and a bright , and the runs straight to a . are carved on the and a on the . The paper sums it up as an elegantly tempered of excellent workmanship overall.
A second blade, a signed with the two characters Norimitsu, was designated at the 26th session in 1979. It is undated, and its paper names no generation; it is placed with this entry by default. The paper repeats that the first Norimitsu is said to have been a pupil of Nagamitsu, and that the line lapsed partway and was revived in the period.
The is shortened yet keeps a high , a fairly wide body and a thick . Its is tight with . The is a showy of mixed with , -dominant with , and the runs in and turns back with a feeling. The published sources call it bright work in the Oei manner and one of the finest among Norimitsu blades.