説明
Antique Japanese Sword Tanto Signed by
Shigezane
with NTHK Hozon
Certificate
【Description】
This blade was signed by Bizen koku Osafune ju Shigezane (備前国長船住重真), who was active during the Shochu-Enbun era (1324-1359: The end Kamakura-Mid Nanbokucho period) in Bizen province (today’s Okayama prefecture). The back of the singature says that the blade was forged during the Shochu era (1324-1326). He belonged to Hatakeda Mori schoo, a branch of Osafune (長船) school. It is said that Shigezane was an apprentice of Kagemitsu and the younger brother of Motoshige, who was one of the most prominent figures in the school during that time. According to one theory, Shigezane later became an apprentice of Soshu Sadamune.
When Shigezane was active in the Nanbokucho period, Japan was tumultuous because the imperial court was split into two sides(south and north). There were many conflicts, and many Samurai were deployed. We assume he must have dedicated himself to forging high-quality blades for those Samurai who fought in battles.
It is said that Osafune school was founded by Mitsutada (光忠), who was active during the mid-Kamakura period. Bizen Osafune school was the biggest one of all other schools in Bizen province, and they received many orders from feudal lords or renowned Samurai. They were called Osafunemono and beloved by Samurai warriors.
Among the swordsmiths who belonged to this school, Nagamitsu, Sanenaga, and Kagemitsu are known as Osafune Sansaku, the three renowned Osafune swordsmiths. There are also four other prominent swordsmiths who were from Bizen Osafune school. They are called Osafune Shiten-no, the four masters of Osafune school. Their names are Nagamitsu, Kanemitsu, Nagayoshi, and Motoshige.
BIZEN is located near the Chugoku Mountains, where iron sands, one of the essential materials for making Japanese swords, were abundant. Furthermore, BIZEN swordsmiths had close access to Yoshi River, where they could find water and charcoal. This geological location contributed to the swordsmiths forging high-quality refined blades. We presume BIZEN was quite active in sword-forging from ancient times. It is said that BIZEN DEN was created by groups of swordsmiths there during the late Heian era (Late 12th century ). These ancient swordsmiths in Bizen province are called Ko-Bizen (Old Bizen) swordsmiths. By inheriting the sword forging techniques from Ko-Bizen swordsmiths, the Bizen Osafune school flourished from the mid-Kamakura period.
*Please keep in mind that there is a couple of Kitae Kizu on blade. If you like to see the detailed condition, please feel free to contact us.
【Blade】
Cutting Edge Length (Nagasa)
:
25.0 cm (9.84 inches)
Curvature (Sori)
:
0.1
cm (0.04 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.
The theme of this Fuchi-Kashira is the Aoi-Karakusa (葵唐草). Aoi (Asarum caulescens, 葵) is a plant pattern in which each stem branches and has characteristic heart-shaped leaves. As its leaves have a habit of always facing the sun, and the word “Aoi” is taken as “Aogu (仰ぐ, looking up)” for the sun, people thought the Aoi pattern would bring good fortune.
Karakusa (Arabesque) is a pattern in which stems and lea