Signature: Biyou Osafune Ju Yokoyama Sukekane Saku
Tomonari 58 idai Mago Keio 1 nen August
Translation: Tomonari 58th generation August 1865.
Additional information.-Yokoyama Sukekane has engraved signature
"Tomonari 58th generation" to call himself that he is deriving the skill
of the Great Bizen Tomonari.
The blade was polished.
Blade length : 66.96 cm or 26.36 inches.
Sori : 1.81 cm or 0.71 inches.
Mekugi : 1
Width at the hamachi : 3.19 cm or 1.25 inches.
Kasane : 0.79 cm or 0.31 inches.
Era : Late Edo period.
Shape : It is Nagamaki style shape katana. It is wide and thick stout looking piece
and the shape is exceptionally good.
Jitetsu : Koitame hada well grained with muji style fine jigane.
Hamon : It is Nioi structure from the hamachi and gradually becomes choji midare hamon that reminds of the chrysanthemum flower petal.
The hamon is in well-regulated hamon. boshi is round end and burnt down style.
Special feature : Bizen Osafune Jyu Yokoyama Sukekane is an adopted son of Yokoyama Sukemori
and also a brother-in-law of Yokoyama Sukenaga who is also a mentor of Sukekane
and has tought many of the skills to him. Especially the extraordinary choji hamon was invented by Sukenaga
and has been widely known and highly reputated as Yokoyama Sukekane school hamon.
This profoundly gorgeous Jyukka Choji hamon was beloved by many sword fans.
This piece is Nagamaki style rare to be seen sword.
There is absolutely no kizu or flaw. It is wonderful piece.
NBTHK Hozon Paper
Aoi Art estimation paper : whole Oshigata.