兼延は、兼氏門となる直江志津の名工で、その名跡は室町後期まで続いているが、室町中期明応頃に美濃から尾張志賀に移った兼延が最も上手である。この刀は、身幅広く、腰反りつき、先は細めとなり、元は80㎝を超える太刀で、板目に、杢目肌交じりの地景よく入る、黒く冴えた地鉄に、直刃調に、小のたれに・互の目・尖り刃交じり、湯走りかかり、沸よくつき、匂口明るい刃を焼き出来がよい。姿作風から直江志津まで上がるとも思われ、目立つ傷欠点無く、健全で、最上砥ぎが掛けられ、砥ぎの状態もよい名品である。Kanenobu was a master craftsman of Naoe Shizu, which became Kaneuji clan, and his reputation continues until the late Muromachi period, but Kanenobu, who moved from Mino to Owari Shiga around the Mei-o era of the mid-Muromachi period, is the most skilled.
This sword has wide Mihaba, Koshizori-tsuki, The tip becomes narrower, It was originally a long sword Tachi over 80cm long, Itame, Mixed Mokume Chikei entered well, Black and clear Jitetsu, Suguha-style, Small-Notare, Gunome, Mixed Togariba, Yubashiri-kakari, Nie entered well, Nioikuchi is bright blade has a good finish. It is thought that it could be ranked up to Naoe Shizu due to its style, and it is a masterpiece with no noticeable scratches and has been polished to the highest quality using Kenzen, and is in good condition.