AS17196-Katana:Mumie attreibuted as Sairen.

Katana in Shirasaya with Koshirae.(NBTHK Tokubetsu Hozon Token)
Signature :Mumie attreibuted as Sairen.

(We divide 4 sections for each sword as Saijyo saku, Jyo-jyo saku Jyo saku and regular saku)
This sword belongs to Jyo Jyo Saku ranking.
The blade was polished.
Habaki :　Gold foiled single habaki.
Blade length : 70.3 cm or 27.7 inches.
Sori :1.82 cm or 0.717 inches.
Mekugi : 3
Width at the hamachi:2.8 cm or 1.1inches.
Width at the Kissaki: 1,9 cm or 0.75 inches.
Kasane : 0.6 cm or 0.236 inches.
The weight of the sword 755 grams.
Era : 1303 Kagen era Kamakura period 1303.
Shape: Osuriage Mumei (cut shortened) the blade is Koshi zori, rather wide and thick with deep sori and longer kissaki;
Jigane: Itame hada well grained with Jinie attach blackish Jigane and Hadatatsu texture.
Hamon :Nie deki suguha ,double hamon, with small nashi, yo work and also sunagawa Kinsuji work.

Special feature: Sairen is a child of Ryosai and is said to be the father of Jitsuya (according to the Ko-zan Oshigata book). A sword called Kuniyoshi and Seiren are the same swordsmith.
Sairen’s style is similar to Ryosai’s and Mia’s style. There
are many works that stand out on the skin, and the iron color is
blackish, and the straight Hamon blade is generally Hotsure and
The scent is rather weak nioikuchi which is showing the tradition of
Kyushu.

Koshirae: Handashi Koshirae.
Saya: Beautiful Saya made to imitate a cherry tree
Tsuba: Carve a family crest on Moeko style iron Tsuba.
Menuki: Waves design is engraved on the Shakudo plate.
Fuchikashira: wave’s design is engraved on the Shakudo plate.
Ware Kogai: on the silver plate, flowers are engraved.
Kojiri: On the Shakudo plate, waves are engraved.

From Aoi Bijyutsu: This work has the characteristics of Kyushu, and the sword flows Masame hada through the JIgane The blade pattern is a straight blade(suguha harmon), and the blade pattern is shallow and small notate Hamon mixed.
This sword is a very active temper line with much Kinsuji double hamon and also ashi yo copper with other Saten,
so it is not inferior to the Jyuyo Token sword. It is also a good idea to try polishing again for old polishing. The work that combines the old dignity of Sairen with the expanded and gorgeous atmosphere is wonderful. We highly recommend the prestigious Kyushu Seiren, which is over 700 years old.

NBTHK Tokubetsu Hozon Token
Aoi Art estimation paper: whole Oshigata.