Ordering number: 23027
Katana in Shirasaya（NBTHK Tokubetsu Hozon Token）
Signature: Chikushu Ju So Tsutomu(Mukansa Swordsmith)
Mizunoe Ne 2 Gatsu Kichijitsu(February of 1972)
(We divide 4 sections for each sword as Saijyo saku, Jyojyo saku Jyo saku and regular
This sword belongs to Jyo Jyo saku ranking.
Habaki: Gold foiled double Habaki
The blade is polished.
Blade length:74.0cm or 29.13inches.
Sori:1.9cm or 0.74inches.
Width at the hamachi:3.3cm or 1.29inches.
Width at the Kissaki:2.4cm or 0.94inches.
Kasane:0.65cm or 0.25inches.
The weight of the sword:870grams
Era: Modern times
Shape: The blade is broad and thick with Ububa left, deep Sori and longer Kissaki.
Jigane: Koitamehada is grained well to be dense. Elaborate Jigane.
Hamon: Niedeki rounded Gunomemidare with deep Nioikuchi and lots of Ashi. Boshi is
Midarekomi and turns back round.
Special feature: So Tsutomu is a swordsmith who is born in Fukuoka, in 1927. He learned sword making from his father, who was a pupil of Komiya Shiro Kunimitsu. In 1955, he exhibited many swords to Sakuto(sword making) Gijutsu(technique) Exhibition(present “Shinsaku Meitou Exhibition”), and won series of prizes, to be designated as Mukansa swordsmith. He also made Bizenden and Yamashiroden, and trace of Sukehiro with Toranba that has deep Nioikuchi. His swords are gathering attentions of sword lovers. He is also famous for tracing Kiyomaro.
Aoi Art estimation paper: whole Oshigata by Ayaka Tsuruta
NBTHK Tokubetsu Hozon Token paper