Length of cutting edge 54.9 cm, Curvature 1.8 cm, Width of base 26.9 mm, Width of Yokote 18.8 mm, Thickness of base 6.5 mm
Blade construction (kengyo) : Shinogi-zukuri, Iori-mune, long Wakizashi. Both width of Motohaba and Thickness of Kasane are in average holding a rather deep curve, sophisticated degree of tapering from base to point leading to an extended middle kissaki. There is a pair of round-end Bo-hi grooves on both sides.
Forging pattern (kitae hada) : Kitae hada is precisely fine ko-Itame hada. The entire hiraji is sparkling vividly activated with fine and uniform ji-nie (crystallized hard metal granules) against precise Chikei (darkish Nie small curved lines) activity.
Tempering pattern (hamon) : Hamon is fine crystallized Nie based wide straight SUGUHA with shallow Notare indication. The interior of temper is filled with mist-like area and fray of "Hotsure" and double quench scene of "Niju-ha" activities are seen in the crystallized boundary line.
Temper of tip (boshi) : Boshi forms wide straight outline regularly medium circle turns back in good manner.
Tang (Nakago) : Nakago is UBU original. O-Sujikai (greatly slanting left) filemarks. Single bevelled heel shape. Back ridge is flat with greatly slanting left filemark. One Mekugi-ana peg hole. The inscription in front is chiselled on Shinogi-ji, starts with the real name of Miki-shinbei-no-jo 三木新兵衛尉 then the smith name UJISHIGE 氏繁 and the method of forging Seiren-saku 精練作 (forged into refined steel).
It is understood from the inscription of "Seiren-saku 精練作" that this wakizashi is elaborately forged using a choice steel which is collected from Chikusa river where is the most famous as a iron sand mining district.
Condensed quenching activities along Suguha boundary line clearly stands out against the fine steel and shows full of Yamato school technique. The graceful shape holds the close resemblance to the Tachi from ancient Kamakura period.
The filemark of Nakago remains in an excellent state with a lively chiselled inscription and superb patina.
There is a tiny dent on Hiraji in front which has been well eliminated by a skilled polisher.
Old good polish/Condition scale: very good (using a scale of mint-excellent-very good-good-fair-poor).
An original old Black Ro-iro lacquered scabbard Wakizashi Koshirae mount consists of :
Hilt : White layskin gray-indigo blue (Nando-iro) silk cord lozenge wrap
Fuchi/kashira : calligrapher "Ono no Michikaze" design brass ground, Takabori carve, Iroe inlay signed Eizui 永随
Menuki : Horse design, Shakudo, Yobori carve, Gold Iroe inlay
Kozuka : Snipe/reed design, brass ground, Takabori carve, Iroe inlay, unsigned.
Tsuba : Circular design (Tomoe) of bamboo leaves, iron ground, Nikubori carve, openwork, unsigned
Copper ground / silver foiled single layer habaki collar, preserved in a Shira-saya plain wood mounting.
