Ordering number: AS18427
Katana in Shirasaya(NBTHK Tokubetsu Hozon Paper)
Signature: Mumei (Den Hosho)
(We divide 4 sections for each sword as Saijyo saku, Jyojyo saku
Jyo saku and regular saku)
This blade belongs to Jyo Jyo Saku ranking.
The blade was polished.
Blade length : 73.0 cm or 28.74 inches.
Sori : 1.7 cm or 0.66 inches.
Width at the hamachi : 2.96 cm or 1.16 inches.
Width at the Kissaki : 2.05 cm or 0.80 inches.
Kasane : 0.65 cm or 0.25 inches.
The weight of the sword 725 grams.
Era: Late Kamakura period of 1324.
Shape: the blade is cut shortened Osuriage mumei style.
The blade is regular-sized with large Sori.
Jitetsu : Itame hada well grained with jinie attach with chikei.
There are Utsuri.
Hamon: Nie deki suguha hamon with double hamon, and Ko Gunome midare. The Boshi is Yakizume and strong Nie with Kinsuji.
Special feature: Hosho is the name of a group of swordsmiths in the koto period. They worked in Yamato province.
The founder was Kunimitsu who lived circa Koan (1278) of the late Kamakura period. Hosho Goro Sadamune,
Saemon no jyo Sadayoshi and Fujiwara Sadakiyo were his sons who were also worked as the principal smiths of this school.
They were good at masame-hada kitae. Quite a few tantos survive but their Tachi is extremely rare.
Regularly patterned masame-hada includes nie appears on the whole part of the blade.
The different point between koto Hosho-mono and Shin-to is hada-ware. Masame does not stick with hada.
Boshi appears along with masame that approaches to the mune. The point is hakikake, yakizume with much nie.
From Aoi Art: in Yamato, master craftsmen like Hosho, Taima, Tegai Shikkake,Senjyuin,
were high-level sword makers. who Made for fighting monks. These swordsmiths emigrate to various places
and have a strong influence on Bizen, Aisu, Mino, Yamashiro, etc.
Especially Hosho’s work is straight-grained (Masame Hada) and has become the target of many swords collectors.
This work is a work where the bullion is packed and the grain is not very noticeable,
but if you look closely, the grain is obvious and the ground is appearing violently
People have a preference. If you want to get the grain straight out, the grain will come out by polishing without any problems if you wish.
In addition, we recommend polishing by this elegant uninspected polisher for those who enjoy watching the straight grain while being moist.
However, if you are aiming at upgrading it may be better to put out more straight grain. Either way, it is a masterpiece that has never come out these days.
Polishing has been completed recently by Mukansa polisher. Please purchase it as a home treasure with dignified and wonderful work.
Also Shinogi ji doesn’t have Bo-hi. This is very good because we can see the Masame hada
texture well. If Bo-hi is engraved, it is impossible to see the texture of shinogo ji.
NBTHK Tokubetsu Hozon Paper
Aoi Art estimation paper: whole Oshigata.