Antique Japanese Katana Sword with Red Saya and Gold Fukurin Momiji Tsuba

• Signature (Mei): Mumei (unsigned) — both sides
• Period: Edo Period — jidai-tō in period koshirae
• Mounting: Period koshirae — red lacquer (aka-nuri) saya with brown sageo; iron fukurin tsuba with gold rim and momiji kebori; brass (shinchū) fuchi-kashira with karakusa; crane (tsuru) menuki in shakudō; warm-toned habaki
• Blade Length (Nagasa): 69.0 cm
• Curvature (Sori): 1.6 cm
• Mekugi-ana: 1
• Shape: Shinogi-zukuri, chu-kissaki
• Motohaba: 29.2 mm / Sakihaba: 20.0 mm
• Motokasane: 7.2 mm / Sakikasane: 4.8 mm
• Blade Weight (naked): 769 g / Weight with saya: 1,043 g
• Total koshirae length: 100.5 cm / Saya: 75.8 cm / Tsuka: 14.3 cm
• Hamon: Notare (broad undulating wave) — the sword's defining aesthetic characteristic
• Boshi: Calm turnback into composed chu-kissaki
• Condition: No critical defects (no bends, edge failures, chips, or serious rust); minor surface wear as expected for age. Suitable for iai / battō / tameshigiri.
• Registration: Osaka Prefecture Board of Education No. 40269

This distinguished Edo-period Katana is an unsigned (mumei) jidai-tō of considerable presence — a long, well-proportioned blade in a period koshirae of striking visual character, unified by a warm autumnal palette that sets it apart from the more conventional black-and-iron ensembles of the era. At 69.0 cm with a full 1.6 cm sori and a robust motokasane of 7.2 mm, this is a substantial sword with real weight and authority in the hand — the 769 g naked blade weight confirming its suitability for iai, battō, and tameshigiri practice without reservation.

The blade's defining characteristic — and the quality that gives it its immediate identity — is the hamon. The listing describes it as 湾れ刃 (notare-ha): a broad, smoothly undulating tempering line whose waves roll along the cutting edge with the calm inevitability of a gentle sea. This is among the most classically beautiful of all hamon styles, its appeal rooted in the way the broad notare sweeps create a sense of restful motion along the entire length of the blade — neither the dramatic turbulence of a full midare nor the austere stillness of a pure suguha, but something poised and harmonious between the two. The habuchi carries fine nie in an even, soft distribution that reinforces the hamon's composed, gentle character. The ji is dark and well-forged, and the hamon continues into the chu-kissaki with a calm, composed turnback — consistent with the blade's overall aesthetic of refined tranquility.

The single mekugi-ana and the aged nakago confirm this is a genuine period blade with authentic history. Minor surface wear is present as expected for a sword of this age, but no critical defects — no bends, edge failures, chips, or serious rust — are recorded or visible. Osaka Prefecture registration No. 40269 confirms full legal status.

Koshirae Details

The koshirae of this sword is among the most visually distinctive in the present collection, its warm palette of deep red, amber, and aged brass creating an ensemble that feels simultaneously autumnal and aristocratic. Every component contributes to a unified aesthetic statement of considerable confidence.

The tsuba is the ensemble's most technically remarkable element. An iron piece in the mokko form — its four lobes giving the guard a soft, organic silhouette — its entire surface is covered with a dense, all-over pattern of momiji (maple leaf) kebori: hundreds of tiny incised maple leaves scattered across both faces of the iron ground in a composition that evokes the texture of an autumn forest floor. The momiji motif carries deep resonance in Japanese aesthetics — the red maple is the quintessential symbol of the autumn season, of fleeting beauty, of the mono no aware that permeates classical Japanese culture. Most significantly, the guard is finished with a continuous gold fukurin — a gold border lining the entire edge of the tsuba — a prestigious and labor-intensive detail that frames the autumnal scene with a rim of warm gilt and signals that this was a sword commissioned for a person of cultivated taste and real means.

The saya commands immediate attention. Lacquered in a deep, warm red-brown (aka-nuri) that glows with the rich tone of aged lacquer, it is one of the most visually striking saya in the collection — its color harmonizing perfectly with the gold fukurin of the tsuba and the amber tsuka-ito. A broad brown silk sageo is tied at the kurikata in a generous hana-musubi knot, the cord's earthen tone completing the autumnal chromatic ensemble. Black horn koiguchi and kojiri fittings provide precise, functional anchors at each end.

The fuchi-kashira set is worked in warm brass (shinchū) — its golden-yellow tone catching the light with the same warmth as the tsuba's fukurin rim — engraved with flowing karakusa (arabesque scrollwork) on both pieces. The vocabulary of curling vines and leaves connects naturally with the momiji decoration of the tsuba, the two motifs speaking a shared language of organic natural forms across the ensemble. The menuki depict a crane (tsuru) in dark shakudō — its long neck, spread wings, and detailed feather texture rendered with the confident hand of a skilled kinko artisan. The crane is among the most auspicious symbols in Japanese culture, associated with longevity, fidelity, and the enduring dignity of the samurai class.

The tsuka is wrapped in warm amber-gold silk tsuka-ito in tight hishi-maki braid over white same (ray skin), the warm honey tone of the ito perfectly complementing the red saya and brass fittings. Together, the ensemble presents a chromatic coherence — red, amber, gold, and dark iron — that is both immediately striking and quietly sophisticated.

Historical Context: The Edo-Period Jidai-Tō and the Notare Tradition

The notare hamon — broad, gently undulating, suffused with soft nie — represents one of the great aesthetic traditions of Japanese sword tempering, associated above all with the schools of the classical Kamakura and early Muromachi periods that first developed the technique of differential hardening into a conscious art form. By the Edo period, the notare had become the hamon style most closely associated with refined aesthetic sensibility — the choice of smiths and patrons who understood that beauty in a sword lay not in theatrical excess but in the deep, unhurried mastery of a form that had been perfected over centuries.

An unsigned jidai-tō with a fine notare and a koshirae of the quality presented here was not a soldier's weapon or a tool of commerce — it was the sword of an educated samurai who understood both the practical and aesthetic dimensions of what he carried. The momiji tsuba with its gold fukurin, the crane menuki, the red lacquer saya: these are the choices of a man who read poetry, who appreciated the seasons, and who understood that the sword at his side was a mirror of his inner life as much as an instrument of his physical one. That such a sword has survived intact, in its original koshirae, and with its registration fully in order, is a gift to the collector who recognizes it for what it is.