Katana in Shirasaya (NBTHK Tokubetsu Hozon Paper)
Signature : Sosyu Jyu Tsunahiro
(We divide 4 sections for each sword as Saijyo saku, Jyojyo saku Jyo saku and regular saku)
This sword belongs to Jyojyosaku ranking.
Sue Koto : Jyosaku : Sagami
The blade was polished.
Habaki : Gold Single plate 40g
Blade length : 75.4 cm or 29.69 inches.
Sori : 1.0 cm or 0.39 inches.
Mekugi : 3(2 filled)
Width at the hamachi : 3.1 cm or 1.22 inches.
Width at the Kissaki : 2.23 cm or 0.87 inches.
Kasane : 0.62 cm or 0.24 inches.
Era : Late Muromachi Period
Shape : It is Suriage Machiokuri cut shorten work with full signature remaining.
It is wide and thick katana with some Sori.
It is nice shape with long Kissaki.
Jitetsu : Itame Hada well grained with Jinie attached.
The Hadame pattern could be well observed.
Hamon : Nie Deki Gunome Midare with Ko Gunome Midare mixed. There is soft Koashi with Sunagashi and Kinsuji active work.
Special feature : Tsunahiro has moved to Sagami Province at late Muromachi period
and became active sword smith.
This sword smith group has lasted until Shin Shinto period.
Especially, Soshu Jyu Tsunahiro was famous for the Hitatsura hamon. His broad
and soft feeling pieces were popular among the sword fans.
While there is many work with engravings with Mitsumune style Mune, this sword stays without any engravings.
Tsunahiro was called Yamamuraj Souemon and later on moved to Tsugaru Province(Aoimori Prefecture now) by the order of the feudal load there.
He has made around 300 swords of various size. During Keicho 11th year, he has finished all work and has moved back to Odawara.
He passed away at the age of 91 in Kanei 15th year February 27th.
Soshu Jyu Tsunahiro has made many sophisticated works.
He has fully depicted the traitss of Soshuden work which could be His fine combination of Jigane plate and Hamon line Soshu Den work .
It is a piece that resembles the top Soshu Jyoko(top swordsmith) work.
The Habaki is 40g solid gold Habaki.
NBTHK Tokubetsu Hozon Paper
Aoi Art estimation paper : whole Oshigata.