[ Feature ]
Form : The blade features a shinogi-zukuri ridge-forged construction with an iori-mune hut-roofed ridge, a broad body, and an ordinary thickness. The width differs slightly between the base and tip, with a shallow curvature and a chu-kissaki slightly short in length.
Nakago : The tang is shortened, with sujikai diagonal file marks, a cut tip, and three makugi peg holes.
Engraving :
The engraving consists of rod-shaped grooves flowing along both sides.
Jigane : The jigane exhibits a fine, well-grained ko-gunome small-texture, with jinie present and a fine, finely-grained jigane, which is bright and vivid.
Hamon : The hamon is in a straight pattern, shallowly undulating, with fine, well-defined k-nie. There are occasional irregularities along the edge, with some sunagashi sand-like flow.
Boushi : The boshi is a su-guha straight tone, small-rounded shape, with a sweeping tip, returning somewhat deeply.
[ Highlight ] Tsuda Echizen-no-kami Sukehiro was born in 1637 in Uchide Village, Settsu Province (present-day Ashiya City). Known by the common name Jinnojo, he was a disciple of the first Soboro Sukehiro. In 1655, following his master's death, he succeeded as the second generation. In the third year of Meireki, he received the title of Echizen-no-kami. In the seventh year of Kanbun, he was employed by Aoyama Inaba-no-kami Munetoshi, the Osaka Castle Deputy Governor. He passed away in the second year of Tenna at the age of forty-six. Following his early work in the Sekido style with chōji-midare (clove-like irregular hamon), he forged gunome-midare (interlocking irregular hamon). He was also skilled in straight hamon and further perfected a unique blade pattern known as tōran-midare (turbulent wave-like irregular hamon), which captivated the era. This piece, though polished, is a valuable work bearing the inscription “Kakutsuda” with the date Kanbun 12 (1672). It exhibits the typical proportions of a Kanbun shintō (new blade), featuring a well-tempered jigane (ground metal) and a finely boiled, straight-edged pattern with a shallow, wavy hamon (temper line) that can be appreciated.
[ Conditions ] The blade shows signs of old sharpening, with some minor rust and pitting. There are several areas of decay.