Period: Very late Showa-Heisei.
Overall length: 29.13 inches (740.00 mm)
Nagasa: 24.17 inches (614.00 cm) long.
Nakago: Ubu, 4.96 inches (126.00 mm), and one mekugi-ana. The yasurime are kiri.
Moto-haba: 1.30 inches (32.95 mm). Moto-gasane: 0.21 inches (5.36 mm). Thickness at tip: 0.41 (3.59 mm).
Hamon: Midare best describes it.
Hada: As best I can describe it, itame/mokume.
Very good polish. No flaws, ware, chips, hagirae or bends.
The mei 'Yasuyoshi' is used by Ono Kiyoshi who lives in Sagami, Yokohama-city, Kanagawa province.
Now if this was by Ono Yasuyoshi, it would be worth £5k or more. However, I'm convinced that it is gimei; the real Yasutoshi's work and signature can be seen here. It has however been traditionally forged and edge-tempered; it is a good blade in its own right, and better than any repros that I have seen. You would pay more than the asking price to get one made for you by a smith.
Of course, I may be wrong in describing it as gimei, in which case someone gets a bargain. I don't think that I am.
SOLD. Free shipping, bag included. Currency conversion.