鎬造、庵棟、身幅広く、反りやや深く、元先の幅差つき、中鋒やや延びる。Shinogidukuri, Iorimune, Wide Mihaba, Slightly deep Sori, With width difference of Motosaki, Chu-Kissaki slightly extended.
鍛Kitae
板目肌つみ、杢目・流れ肌交じり、地沸厚く付き、地景入り、鉄冴える。Itamehada-tsumi, Mokume, Mixed Nagarehada, Jinie entered thick, Chikei entered , Iron is clear.
刃文Hamon
互の目に、丁子刃・重花風の丁子、蛙子調の丁子・尖刃など交じり、飛び焼き頻りにかかり、足よく入り、小沸深くよくつき、金筋長く頻りにかかり、砂流しかかり、匂口明るく冴える。Gunome, Choujiba, Juka-style Chouji, Kawazuko-chouji, Mixed Togariba, Tobiyaki-shikirinikakari, Ashi entered well, Small-Nie entered deeply well, Kinsuji hangs long over and over. Sunagashi-kakari, Nioikuchi is bright and clear.
生ぶ、先栗尻、鑢目切、目釘孔一。Ubu, Sakikurijiri, Yasurimegiri, Mekugiana is one(1).
ハバキHabaki
金着一重Gold-clad single layer
説明Drscription
初代信国から数えて十二代目の信国吉貞は慶長7年に豊前より、筑前へ移住し黒田長政に仕えた。その後筑前信国派は、江戸末期まで栄えている。
この刀は、生ぶ茎無銘の長政が打たせた内の一口と思われ、反りやや深い優美な姿で、地沸厚くびっしりとつき、地景入る美しい地鉄に、互の目に、重花丁子・蛙子丁子・飛び焼きなど交え、華やかに乱れ、金筋砂流し頻りに掛るなど刃中の働きも盛んな傑作であるYoshisada Nobukuni, the twelfth generation counting from the first generation Nobukuni, moved from Buzen to Chikuzen in 1888 and served Kuroda Nagamasa.After that, the Chikuzen Shinkoku school flourished until the end of the Edo period.
This sword is believed to have been forged by Nagamasa with the name Ubu Nakago Mumei. With a graceful figure Slightly Deep Sori, Jinie entered a lot and thickly, Chikei entered beautiful Jigane Gunome, Juca-chouji, Kawazuko-chouji, Mixed Tobiyaki, Gorgeouse Midare, Kinsuji and Sunagashi-shikirinikakaru, It is a masterpiece in which the work well in sword.