日本刀 骨董 短刀 銘 青江家次 第三十三回重要刀剣指定品

附属品

NBTHK JUYO certificate, Koshirae Case (Decorative Sword Mounting), Shirasaya Case, Traditional Sword Carrying Bag, Sword Maintenance Kit, Full Exportation Support

Category

Tanto (KOTO)

Age

The 2nd year of Enbun era (1357: Mid Nanbokucho period)

Location

Bitchu province (today’s Okayama prefecture)

反り

0 cm (0 inches)

登録証

Tokyo 28558

販売店の記載のまま

Summary This blade was signed by Bitchu no Kuni ju Ietsugu (備中國住家次), dated to the 2nd year of the Enbun era (1357, mid-Nanbokucho period), according to its NBTHK appraisal. Bitchu corresponds to today’s Okayama Prefecture. Ietsugu was one of the most prominent swordsmiths of the Aoe school during the mid-Nanbokucho period. Aoe school was founded by Yasutsugu (安次) during the late Heian period (Early 12th century), and it was located in today’s Kurashiki town, Okayama prefecture. In Bitchu province, there were two prestigious schools during that time. One is Aoe school, and the other is Seno school, established by Noritaka (則高). Aoe school was prosperous from the late Heian to the late Nanbokucho period. Aoe school is divided into three categories in Japanese sword terminology depending on the period. When the blade is from the late Heian-mid Kamakura period, it is called *Ko-Aoe (Old Mihara). It is called Chu Mihara(Middle Aoe) for those forged in the mid Kamakura-early Nanbokucho period. Finally, Sue-Aoe (Late Aoe) is used for the late Nanbokucho period or later. Based on the inscription on the tang, we believe it is categorized as Chu Aoe or Sue Aoe. One of the most famous figures in Aoe school is Moritsugu, who trained Sadatsugu, Tsuguie, and Tsunetsugu. These three swordsmiths were famous for Gobankaji (御番鍛冶). Gobankaji is a unique system created by the retired emperor Go-Toba (後鳥羽上皇), who was enthusiastic about the Japanese sword-forging. He summoned twelve of the finest swordsmiths nationwide, and one swordsmith forged a blade for the emperor each month. Tsuguyoshi was the son of Tusuguie, who must have mastered superb craftsmanship. Bitchu 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 Takahashi River, where they could find water and charcoal. This geological location contributed to the swordsmiths forging high-quality refined blades. When Aoe school flourished 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. The Aoe school must have dedicated itself to forging high-quality blades for those Samurai who fought in battles. It is said that they were land owners and Samurai as well. They served the southern imperial court, which ended up losing the battle against the northern imperial court. After the southern side was lost, the school’s property was ended. However, the descendants of a member of Aoe school established another school called Mizuta school in the Muromachi period, and lasted during the Edo period. What is Tanto? Japanese swords under the blade length of 30cm (11.6 inches) are generally called TANTO, and sometimes TSUBA(鍔; Hand-Guard) is not attached to the TANTO. It was easy to carry and convenient for close combats. It was initially used as a supplemental weapon for Samurai on horseback, who used a pole weapon or long sword in the Kamaura-Muromachi period. Samurai aimed at an unprotected area of his enemy’s armor with Tanto while having to fight with close distance. TANTO was named accordingly, depending on how you carry it, such as HUTOKORO-GATANA (懐刀; Stomach-Sword) or KOSHI-GATANA(腰刀; Waist-Sword) or elsewise. TANTO was also a gift for a bride from her family in a traditional Japanese wedding, as it is believed that TANTO would be divine protection from evil power. 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). 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 a couple of areas with light rust on this blade. If you would like to know more about the detailed condition, please feel free to contact us. Koshirae All of the sword mountings of this Koshirae are decorated with the common motif: the Gosan-no-Kiri Mon (五三の桐紋). It comes from the Kiri (桐, paulownia) pattern, and the Gosan-no-Kiri Mon is a popular and famous design for this flower pattern. The Kiri (桐) pattern is generally composed of three standing straight inflorescences and three leaves. The number of blooming flowers at each inflorescence means the ranks of this design. The imperial family and national leaders back then once used this plant pattern. Today, this plant pattern is used as the crest of the Japanese Government. It is permitted to be used by ordinary households and is appreciated as their family crests. According to a tradition, the Houou (鳳凰, Fenghuang, a kind of sacred beast) rests its wings at the paulownia tree; therefore, it has come to be regarded as a sacred plant. The surface of each sword mounting and metal fittings were finished with the Nanako-Ji (魚子地) technique. By hitting with the Nanako-Ji Tagane (魚子地鏨, chisel used for this technique), delicate fish egg-shaped protrusions are made on the surface of the metal. This process is often seen and is one of the elements that add gorgeousness to the appearance of metalworks. Fuchi-Kashira This Fuchi-Kashira is finished with a glossy black lacquer. Urushi lacquer is a traditional Japanese natural lacquer made from the sap of the urushi tree. It has been used in Japan for centuries for its deep luster, durability, and resistance to moisture, and it develops a richer sheen and character as it ages. Habaki This Habaki consists of the two parts. The outer part of the Habaki is made of 16K gold. Saya This Saya is covered with black lacquer. Due to its high waterproof effect, lacquer has been used since ancient times in Asia. The blade of a Japanese sword is made of iron, and moisture is the greatest enemy of iron. For the purpose of carrying the blade without degrading it, people devised a method of coating the scabbard with lacquer. To prevent not only moisture but also rain and snow from penetrating the inside of the scabbard, it was necessary to apply multiple layers of lacquer. The Nushi (塗師, lacquerers) was born precisely because advanced techniques were required to handle the complicated processes. Authentication Paper They authenticated the blade on July 10th in the 51st year of Showa (1976). They appraised it as JUYO TOKEN, the blade exceptionally worth preserving for Japanese society.

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