説明
Antique Japanese Sword Wakizashi Signed by Naotane
with NBTHK
Tokubestsu
Hozon
Certificate
【Description】
This wakizashi bears the signature of Yoshihira(吉平), a swordsmith from the Fukuoka Ichimonji school(福岡一文字). Fukuoka Ichimonji was one of the most influential schools in Japanese sword-making history and reached its peak during the mid-Kamakura period (mid-13th century). Yoshihira was active during this golden era, and his lineage is highly esteemed. His grandfather, Muneyoshi, was one of the Gobankaji (御番鍛冶), an elite group of thirteen swordsmiths chosen by Emperor Go-Toba to craft swords for the imperial court. His father, Yoshiie, was also a highly skilled swordsmith. Together, they contributed to the development of the Ichimonji school, which became one of the most significant traditions in Japanese sword-making.
Many swords from the Kamakura period were later shortened (suriage) due to changes in combat styles and restrictions imposed during the early Edo period, making original signed blades extremely rare today. This piece has been preserved as a wakizashi, with its signature intact through a technique known as orikaeshi-mei (折返銘). Orikaeshi-mei is a preservation method where the tang (nakago) is folded back during shortening, allowing the original inscription to remain visible. The presence of this technique makes this an exceptionally valuable blade, as it retains the name of a renowned Fukuoka Ichimonji swordsmith, a rarity among surviving works.
The Fukuoka Ichimonji school, along with Yoshioka Ichimonji, Kataoka Ichimonji, and Shochu Ichimonji, was part of a broader Ichimonji tradition, which included over 200 swordsmiths. Among these, Fukuoka Ichimonji was the earliest and most prestigious branch, founded in Fukuoka Village, Bizen Province (modern-day Okayama Prefecture) by Norimune (則宗). At the height of its prominence, seven swordsmiths from Fukuoka Ichimonji were selected as Gobankaji, a prestigious honor given to Japan’s finest swordsmiths, each tasked with forging one blade per month for the emperor. This distinction reflects the high regard in which the Fukuoka Ichimonji school was held. Norimune himself was part of this elite group, and today, 15 swords forged by Fukuoka Ichimonji swordsmiths are designated as National Treasures of Japan, with 7 additional blades classified as Important Cultural Properties.
The success of Fukuoka Ichimonji was largely due to the geographical advantages of Bizen Province. Located near the Chugoku Mountains, the region was rich in iron sand, an essential material for sword forging. The Yoshii River provided pure water, and the surrounding areas produced high-quality charcoal, all of which contributed to the refinement of sword-making techniques. The Bizen-den sword-making tradition is believed to have originated in the late Heian period (late 12th century), with early swordsmiths from this region known as Ko-Bizen (Old Bizen) smiths. Among them, Masatsune (正恒) was a particularly important figure and is thought to be the father of Norimune, the founder of Fukuoka Ichimonji. By inheriting and developing the techniques of Ko-Bizen swordsmiths, Fukuoka Ichimonji flourished during the Kamakura period.
One of the most distinctive characteristics of Fukuoka Ichimonji swords is the Choji Midare Hamon (丁子乱刃), a beautifully intricate, irregular wavy tempering line. This elegant pattern made Fukuoka Ichimonji swords highly prized among high-ranking samurai.
This blade 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 are a couple of Kitae Kizu one this blade and there is an Umegane near the tip of the sword. If you like to know the detailed condition, please feel free to contact us.
【Blade】
Cutting Edge Length(Nagasa)
:
52.5
cm (20.6
inches)
Curvature(Sori)
: