Han-tachi Koshirae: Structure, History, and Surviving Examples of This Court-Style Ceremonial Sword Mounting

What is Hantachi-Koshirae—Etymology and Positioning

Hantachi-koshirae (半太刀拵え) is a style of sword mounting (koshirae) that takes an intermediate form between tachi-koshirae and uchigatana-koshirae. The term "hantachi" does not refer to a fully authentic tachi-koshirae, but rather indicates a "half-tachi-like" style that incorporates some of its elements. More precisely, it is understood as a form in which both the customs of a tachi worn suspended from the obi (sash) with the blade pointing downward (haiyō) and the customs of a katana carried at the side coexist, or as "sword mounting that takes a formal style close to tachi-koshirae while also being intended for use as a katana."

This style of mounting is believed to have been established during the Muromachi through Azuchi-Momoyama periods, and was used as formal dress by the kuge (court nobility) and upper-ranking samurai families. While purely authentic tachi-koshirae was positioned as formal dress for rituals and Shinto ceremonies, hantachi-koshirae has a "semi-formal" character, intended for more everyday official occasions—such as audiences with the shogun, ceremonial processions, and important events of daimyo families.

Structural Features—Differences from Tachi-Koshirae

To understand the structure of hantachi-koshirae, one must first understand the basics of purely authentic tachi-koshirae. Tachi-koshirae involves housing the blade in a scabbard (saya), attaching metal fittings called "ashiganamono" (foot fittings) to the scabbard, threading a "sageo" (hanging cord) through them and suspending it from the waist sash (haiyō). The hilt (tsuka) is shaped to be easy to grip even with the blade pointing downward, and the curve is fundamentally the "koshi-zori" (hip curve) characteristic of tachi.

In hantachi-koshirae, modifications are made to these elements of tachi-koshirae—particularly the scabbard shape, ashiganamono, and sageo treatment—while the structure allows the blade itself to be either a katana or tachi. The scabbard maintains the shape of a tachi scabbard while indicating the "semi-formal" level by reducing the number of metal fittings and slightly lowering the quality of the scabbard lacquer finish. The hilt is, like tachi-koshirae, slender and elongated, with the tsukamaki (hilt wrapping) typically being refined pieces using silk or white thread. The tsuba is typically selected to be large and ornate, with pictorial openwork carving or high relief work.

The Relationship Between Kuge Culture and Hantachi-Koshirae

Hantachi-koshirae held special significance in kuge society because kuge sword-wearing customs maintained a tradition distinct from that of the samurai warrior class. Even during the Muromachi through Edo periods, when samurai began to routinely use practically-oriented uchigatana-koshirae, the kuge continued to follow time-honored tachi-wearing customs in their service to the emperor and retired emperor and in rituals at Shinto shrines and Buddhist temples.

However, constantly wearing purely authentic tachi-koshirae was a significant burden both physically and economically, and hantachi-koshirae, which could "easily create a tachi-like formal appearance," became highly valued. Particularly when men from the sesshoke (regent families) such as Konoe and Kujo, and the seiga (highest-ranking court families), appeared at court ceremonies, ornate mountings that displayed family status were required, making this a showcase for the skills of metalworkers (kinkoushi), lacquerers, and scabbard makers. Orders for hantachi-koshirae played a major role in raising the technical standards of the craftspeople involved in sword fittings.

Extant Important Examples—Focused on Museum Collections

Fine examples of hantachi-koshirae that survive today are housed in major museums and art museums as well as Shinto shrines. The Tokyo National Museum holds several pieces from the late Muromachi through early Edo periods, and the ornate designs of their fitting metalwork have attracted the attention of researchers. Furthermore, in shrines in Kyoto, tachi and hantachi that were once donated by the kuge remain, carefully preserved as sacred implements.

Three features are common to these examples: ① high-quality hilt finishing with white shark skin (shiro-samegawa) or tea-dyed shark skin applied to the hilt, ② ornate seppa and menuki (spacers and ornamental pegs) using gold, aka-dō (red copper), and shibuichi (a copper-silver alloy), and ③ sheaths with black lacquer coating decorated with makie (gold dust lacquerwork) or chinkin (incised gold inlay). The ashiganamono typically number two to three fittings, and the sageo uses high-quality materials such as nishiki-ori (brocade fabric) or kumihimo (braided cord). The blade signatures also typically belong to top-tier swordsmiths of the period, demonstrating the refined quality of these pieces as unified masterpieces combining both mounting and blade.

Modern Evaluation and Research

In modern Japanese sword research, hantachi-koshirae is a field with relatively less research compared to blade studies, and debate continues among sword fittings researchers regarding its definition and scope. In the examination process of the NBTHK (Japanese Sword and Art Sword Preservation Society), blade appraisal is the main focus, and fittings are often evaluated as "tsukitari" (accompanying items), though exceptional fittings can receive independent designation as Important Cultural Properties.

From the perspective of enthusiasts and collectors, hantachi-koshirae is popular as a "reasonably priced, high-quality mounting" that is more readily available than purely authentic tachi-koshirae (and has greater circulation due to slightly lower formal status) while having greater distinction than uchigatana-koshirae. However, professional expertise is necessary to identify counterfeit or later-period replacement (atosuogi) mountings, and consultation with trusted sword dealers or appraisal institutions is strongly recommended when purchasing. In recent years, fine examples of hantachi-koshirae have increasingly appeared at auction houses overseas, and international interest is growing.