Higo Koshirae vs Edo Koshirae: Two Contrasting Aesthetics of Sword Mounting

Sword Fittings (Koshirae) — What Are They?

The koshirae of a Japanese sword refers to the complete set of external fittings used to carry and use the blade. The koshirae, composed of numerous parts including the tsuba, tsuka, menuki, fuchi-kashira, saya, koiguchi, kurikata, and kaeri-zuno, often possesses artistic value equal to or exceeding that of the blade itself.

During the Edo period, regional koshirae styles developed under the influence of each domain's daimyo culture, samurai aesthetics, and hankō (domain-employed craftsman collectives). Among these, Higo koshirae and Edo koshirae stand as the two preeminent styles, commanding high interest among modern Japanese sword enthusiasts and collectors.

Each component of koshirae has its own functional role. The tsuba protects the hand gripping the tsuka from the blade while simultaneously adjusting the balance and center of gravity of the sword. The tsuka securely holds the blade and absorbs impact during manipulation, while the saya protects the edge and enables the sword to be carried. The menuki and fuchi-kashira originally developed from practical purposes—preventing slipping and reinforcing durability when gripping the tsuka—and later acquired decorative qualities that strengthened their character as craft objects. When appreciating the beauty of koshirae, becoming aware of how functional structure evolved into decoration enriches one's perspective.

Higo Koshirae — The Austere Beauty Nurtured by the Kumamoto Clan

Higo koshirae is a sword-fitting style that emerged from the daimyo culture of the Kumamoto Clan (Higo Province, present-day Kumamoto Prefecture). Hosokawa Tadaoki (Sansai) in particular established the style of Higo koshirae, and a high-caliber collective of craftsmen was cultivated within the domain.

The aesthetic qualities of Higo koshirae are captured in the term "shitsujitsu gōken" (austere simplicity and robust strength). Rejecting unnecessary ornamentation, it pursued a consistently refined aesthetic using iron as the primary material—unadorned iron tsuba finished with black patina (Higo tsuba), menuki with linear engraving on an iron ground, and lacquered saya, among other fittings. Representative Higo craftsmen include Hayashi Matashichi, the Nishigaki family, and Shimizu.

The characteristics of Higo tsuba lie in its rustic finish, which retains the black patina of iron, and its motifs created through incised carving (sunken engraving). Plant motifs such as bamboo, plum, and chrysanthemum were favored, and the austere form, employing no gilded coloring whatsoever, embodies the aesthetic sensibility of the warrior.

Edo Koshirae — The Elegant Beauty Nurtured by the Shogun's Capital

Edo koshirae is a sword-fitting style that developed centered in Edo (present-day Tokyo), emerging from the accumulation of advanced metalworking techniques to meet the demands of the shogunate, hatamoto, and daimyo. The aesthetic qualities of Edo koshirae are "elegant refinement and meticulous precision." It employs abundant quantities of red copper (shakudō), pure copper, gold, and silver, and decorates the tsuba, menuki, and fuchi-kashira with diverse techniques including high relief carving, model carving, and flat carving. The Gotō family (descended from Gotō Yūjō) served as the shogunate's official metalworkers, and their style became known as "Hongo Gotō" and was regarded as the highest standard.

Edo koshirae saya feature diverse lacquered colors including vermillion, dark amber, and black, and diverse surface treatments such as polishing, pear-ground finish, and maki-e decoration. Rather than serving as a weapon, Edo koshirae primarily functioned as presentations to the shogunate and diplomatic gifts between daimyo, achieving an exceptionally high degree of refinement as fine craft objects.

Structural Differences

Points to Confirm When Selecting Koshirae

Whether one chooses Higo or Edo koshirae depends not only on aesthetic preference but also on what one prioritizes when acquiring a sword. If the primary purpose is appreciation or preservation, the choice to enjoy the refined metalwork and lacquer art of Edo koshirae is equally appealing; conversely, if one prioritizes simple and robust construction, Higo koshirae's austere character is more suitable.

Furthermore, koshirae are often remade in different eras and by different workshops from their original blades. When considering a purchase, it is advisable to understand that the style of the koshirae may not necessarily align with the era or hand of the blade, and to maintain a perspective that evaluates the koshirae and blade as separate artistic values. The craftsmen and styles of individual components such as the tsuba, menuki, and fuchi-kashira may also differ from one another, and confirming how these components are assembled together is beneficial for both appreciation and acquisition.

Representative Craftsmen and Makers' Names

Notable Higo craftsmen include, in addition to the aforementioned Hayashi Matashichi, Tanetsugi, Hirata Hikozō, and Iwama Shinsuke. These craftsmen, while creating domain-commissioned pieces for daimyo, also produced works for samurai and townspeople. Representative Edo craftsmen include, in addition to the Gotō family (successive members including Gotō Yūjō, Sōjō, and Jōshin), the Yanagawa school, the Nara school, and Yokoya Sōmin. Yokoya Sōmin established a revolutionary technique of applying gold-colored designs on a shakudō ground, bringing innovation to Edo mid-period metalwork.

Basic Storage and Care

Koshirae are composed of materials of varying natures—metal, lacquer, ray skin, and woven cord—so storage conditions require careful attention. Iron tsuba and fittings are prone to rust when exposed to moisture, and high-temperature, high-humidity environments should be avoided. Conversely, lacquered saya are vulnerable to extreme dryness, which can cause cracking, so storage in a relatively stable environment, avoiding direct sunlight and sudden temperature changes, is advisable.

The woven cord and ray skin wrapped around the tsuka may loosen or fray over time or through handling. Regular inspection is recommended, and should any abnormality be noticed, it is best to consult a specialized sword dealer, polisher, or tsuka-wrapper rather than attempting disassembly or repair independently.

The Relationship Between Koshirae and Certificates of Authenticity

Determining the authenticity and age of koshirae requires expertise distinct from that needed for evaluating blades. Certificates of authenticity issued by the NBTHK are primarily for the blade itself, and assessments of the metalworkers and styles of the fittings applied to the koshirae and the design of the saya are typically made individually by specialists in their respective fields. While some koshirae may be accompanied by documents indicating their provenance and history, not all koshirae come with certificates of authenticity, a point worth confirming before purchase.

Modern Valuation and Collector Perspective

In the contemporary Japanese sword market, Higo koshirae maintain strong popularity among collectors who favor refined, understated aesthetics. Despite being iron, Higo tsuba possess high artistic caliber, and fine examples often sell for over one million yen. Edo koshirae command high value as fine art objects, and the finest works by the Gotō family achieve market prices in the millions of yen. However, numerous forgeries bearing the Gotō name—known as "Gotō-utsushi" (Gotō copies)—circulate in the market, making discerning authentication particularly important.

By collecting Higo and Edo koshirae as comparative works, one can experience the diversity of aesthetic sensibility among the samurai class during the Edo period. The contrasting tension between the beauty of Higo and Edo koshirae, experienced when viewing them side by side, most eloquently conveys the depth of Japanese sword-fitting culture.