Muneyoshi was a swordsmith who worked around the Keichô era (1596-1615) at the end of the kotô era of sword making. He worked in the Wakasa Province which combined with the Echizen Province to form the modern day Fukui Province in Northern Japan. Muneyoshi is a swordsmith who also worked in Mino, Echizen, Ecchu, Izumo and Iwami provinces. This katana was made in the late Muromachi to early Edo period.
This is a very powerful katana that is wide and thick with a powerful sori. The cutting edge of the katana is 28.85 inches or 73.3 cm. The moto-haba (width at the hamachi) is 1.1 inch or 2.8 cm and the saki-haba (width at the kissaki) 0.75 inches or 1.93 cm. The kasane (thickness of the blade) is 0,2 inches or 0.53 cm. The sori (curvature of the blade) is elegant and measures 0.9 inches or 2.3 cm.
The jigane is a well-made itame hada with masame-nagare (running masame) hada present in the shinogi-ji. The hamon (temper) is nie based and done in a gunome midare and chôji midare. Around the monouchi (near the point) there is o-gunome. This temper line is very active with lots of ara-nie, chikei, kinsuji, and other activities throughout. In fact, it is so active in the monouchi area with masses of nie in the ji that it appears almost hitatsura (full temper) in that portion of the blade. The bôshi is kaen in style with muneyaki going down shinogi-ji. All in all, this is a very wide and active hamon with lots of activities to enjoy.
This blade comes in an old shirasaya with a sayagaki by Harai Chiba stating that he polished this blade in the thirteenth year of Taisho or 1924. This is very precious because Harai Chiba was a very famous polisher as well as a very well-known calligrapher.
The blade also comes with a very nice set of Edo period koshirae as pictured below. It was awarded NBTHK Tokubetsu Hozon papers in 2018 authenticating the validity of the signature and the quality of the sword. These papers also specify that this sword was made around the Keichô era (1596-1615).