説明
Antique Japanese Sword Katana attributed to Unju with
Tokubetsu Hozon
Certificate
【Description】
Summary
This blade is attributed to Unju (雲重), who was active during the early-mid Nanbokucho period (
1352-1374
: Bunna-Oan era), based on his remaining works. He belonged to Unrui (雲類) school, which flourished from the late Kamakura-mid Nanbokucho period. He lived in Ukai (宇甘) village in Bizen province (Today’s Okayama prefecture). He was known as the son of Unji (雲次), another prominent figure in this school.
The origin of Unrui school
The founder of Unrui school was Unsho (雲生). According to a legendary story, Unsho was ordered to forge a Tachi blade for the emperor Godaigo (後醍醐天皇), one of the most famous emperors in Japanese history. And, Unsho was having difficulty forging a blade that satisfied him. However, one night he dreamed about floating clouds. And he got an idea from these clouds in his dream to make Hamon, and he successfully created the blade for the emperor.
He devoted this Tachi blade to the emperor Godaigo, and the emperor was impressed by the level of Unsho’s craftsmanship, saying, “The activity of Hamon looks like real clouds.” And the emperor Godaigo ordered Unsho to use the letter 雲(Un or Kumo: Clouds in Japanese). Since then, the school was named Unrui (雲類). All the members of the Unrui school used Un(雲) in their maker’s names. Unsho was active during Kengen era (1302-: Late Kamakura period). And the father of Unjyu, Unji, was the son of Unsho. Unrui school is also known as Ukai (宇甘) because they lived in the village in Bizen province.
It is said that the works of Unrui school resemble that of Rai school in Yamashiro province, Aoe school in Bitchu province, or Yamato Den, depending on the blades. One theory says that the members of Unrui school moved from Yamashiro (Today’s Kyoto) to Bizen province during the late Kamakura period. Compared to other swordsmiths living in Bizen province, Unrui school was influenced by Yamashiro DEN (One of the five traditions of the Japanese sword-forging).
It is appraised as a
Tokubetsu Hozon Token
(特別保存刀剣) issued by NBTHK(Nihon Bijutsu Touken Hozon Kyokai:日本美術刀剣保存協会). This authentication paper was only given to authentic Japanese swords, especially well preserved and high quality with artistic value.
*Please keep in mind that there is a couple of noticeable Kitae Kizu on the Shinogiji part of the blade. If you like to see the detailed condition, please feel free to contact us.
【 Blade】
Cutting Edge Length(Nagasa)
:
63.3 cm (24.9 inches)
Curvature(Sori)
:
1.5 cm (0.59 inches)
Hamon
:
The crystalline structure which forms along the cutting edge of a blade as a result of the hardening process
Jimon(Jihada)
:
visible steel surface pattern created by folding and hammering during forging process
Kissaki
:
Kissaki is the tip of the Japanese sword.
Nakago
:
Nakago is the tang of the Japanese sword.
Japanese swordsmiths left the black rust on the tang because it prevents red rust while the tang is in its handle. And the discoloration of the tang was created over time, and it is a great indicator for a Japanese sword specialist to estimate when the sword was forged.
Koshirae
:Koshirae is the mounting of the Japanese sword. There are several parts that consist of Koshirae such as Saya(Scabbard), Tsuka(Handle), Tsuba(Handguard).
Fuchi-Kashira
:
A pair of matching sword fittings that cover the upper and bottom parts of its sword hilt.
Tsuka and Menuki
:
Tsuka is the handle of the Japanese sword and Menuki is its decoration.
The motif of this Menuki is the Mitsu-Domoe (三つ巴).
There are several theories about the origin of the design Tomoe (巴). According to an idea, it was modeled on the shape of the Magatama (勾玉: comma-shaped bead), or it was based on the swirling of flowing water. It is also said that the Tomoe pattern comes from the Tomo (靹). It is a tool attached to the inside of the left wrist when shooting a bow to prevent the bowstring from hitting the arm or bracelet after shooting a