説明
Antique Japanese Sword Wakizashi Signed by Morinaga with
NBTHK
JUYO TOKEN
Certificate
【Description】
Summary
This blade was forged by Bishu Osafune Ju Morinaga (備州長船住守長), a swordsmith from the Osafune school in Bizen Province (present-day Okayama Prefecture). According to historical records, Morinaga was the son of Morishige of the Hatakeda school and the grandson of Morie, the school’s founder. This lineage places Morinaga as a legitimate successor of the Hatakeda tradition. His active period is believed to be around the late Kamakura period, specifically the Shōchū era (1324–1326).
This particular sword is a remarkable example of a naginata-naoshi (薙刀直し), a type of blade that has been shortned from a naginata, a traditional Japanese polearm. Naginata typically features a long shaft with a curved blade at the end, and they were commonly used from the late Heian period (794–1185) onward. The weapon is famously associated with the legendary warrior monk Benkei.
A defining characteristic of the naginata-naoshi style is its curvature concentrated toward the tip, resulting in an elegant and continuous curve from the hamachi (the notch near the tang) to the kissaki (tip). Unlike typical katana, naginata-naoshi blades often retain the ridge line (shinogi) but lack a yokote—the line that usually separates the body of the blade from the tip. As battlefield tactics evolved and the use of naginata declined, many of these weapons were reforged into more practical forms such as the uchigatana, better suited for close combat during later periods.
This History of Bizen Osafune School
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 were 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 the 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.
Appraisal
This blade is appraised as a
JUYO TOKEN
(重要刀剣) 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, exceptionally well preserved and of high quality with artistic value. JUYO is one rank higher than Tokubetsu Hozon. To be eligible for a Juyo Token, it needs to be appraised as a Tokubetsu Hozon Token first. It is extremely rare for an antique Japanese sword to be appraised as JUYO TOKEN, and it is highly desirable among Japanese sword collectors.
*Please keep in mind that there are some visible Kitae kizu on the Shinogiji part of this blade. If you like to check the detailed condition, please feel free to contact us.
【 Blade】
Cutting Edge Length(Nagasa)
:
45.2 cm (17.7 inches)
Curvature(Sori)
:
1.6 cm (0.62 inches)
Hamon
:
The crystalline structure which forms along the cutting edge of a blade as a result of the hardening process
Jimon(Jihada)
:
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