War at home and trade abroad made Muromachi Bizen the busiest forge region in Japan: a century of Sengoku demand after the Ōnin War, and export missions to Ming China carrying blades by the tens of thousands.
This katana by 5th generation Bizen no Kuni-jû Osafune Jirôzaemon no Jô Katsumitsu is dated to August 1505 and features a kenmaki-ryû horimono. It is renowned for its extraordinary sharpness, evidenced by a gold-inlaid cutting test inscription on the nakago from 1656, recording it severed through numerous bodies. The blade exhibits a bright suguha hamon with ko-ashi, vivid midare-utsuri, and kinsuji, housed in a splendid Late Edo period handachi koshirae with Mino school fittings.
NihontoWatchmei · Osafune, Bizen · Sue-kotô · Late Muromachi (eishô era: 1504-1521) · nagasa 62.3cm · sori 1.5cm
Osafune (Sue-Bizen), Bizen · Bizen · around 1490-1529
Fujishiro Sai-jo saku · Tōken Taikan top 14%
1 piece on the market now
On a katana of Eisho 9 (1512), beneath the long signature of Jirozaemon-no-jo Fujiwara Katsumitsu, the smith added a phrase of his own: "as far as my heart can reach, nothing could surpass this"[[c:1]], declaring the blade a work that fully satisfied him. The maker of that boast is the most accomplished bearer of a crowded name. The published sources record that several generations and more than a dozen smiths used the name Katsumitsu among the late-Muromachi Osafune forges collectively called Sue-Bizen, and that within that crowd the branch titled Jirozaemon-no-jo, the son of Ukyo-no-suke Katsumitsu, is especially accomplished, counted with Yosozaemon-no-jo Sukesada and Gorozaemon-no-jo Kiyomitsu as a representative smith of the late Bizen tradition.
What the published sources name as his individuality is a matter of degree within a shared idiom. Every Sue-Bizen smith tempers the open-waisted, double-structured gunome, the fukushiki-gunome that is the diagnostic late-Bizen line; Katsumitsu builds his prime on the same base, well-packed ko-itame carrying ji-nie and fine chikei, over which the temper rides high and bright with ashi and yo entering richly, the nioiguchi clear and tightening, small tobiyaki interspersed. The distinction the judges draw is that he mixes choji into that gunome more freely than his fellows, for a more flamboyant effect. "Compared with Sukesada," the sources write, "Katsumitsu shows more conspicuous choji in the temper, and the so-called crab-claw (kani-no-tsume) irregularities appear relatively less often"[[c:2]]. On his finest dated wakizashi the same point is put positively: he is "particularly adept at a more splendid workmanship in which abundant choji are intermingled within the midare"[[c:3]].
The jigane is the constant beneath that flamboyance. It is the well-packed ko-itame of late Osafune, ji-nie attaching, chikei finely woven, in places a little standing or flowing; on the best pieces the ji-nie lies fine as dust (ji-nie michin). The classical midare-utsuri of old Bizen has largely gone from this late steel and appears only faintly on a few blades; one Eisho-2 katana is read as showing little utsuri precisely because the ji-nie is so strong, so that the jigane itself looks powerful. The boshi answers the hamon, running midare-komi to a ko-maru or a pointed tendency, hakikake at the tip and a turnback. Across both faces lie the devotional carvings of Sue-Bizen, a kurikara, bonji with suken, and shrine names such as Hachiman Daibosatsu and Amaterasu Kotaijin, which the sources are careful to call the work of collaborating horimonoshi rather than the smith's own hand.
Katsumitsu is, above all, the great collaborator of the house, and his record is largely one of joint work. With his brother Sakyo-no-shin Munemitsu he cut the blades long prized as Munekatsu gassaku, the two names signed together on katate-uchi uchigatana and wakizashi; on one Eisho-7 wakizashi the inscription explicitly reads "younger brother, Sakyo-no-shin Munemitsu"[[c:4]], a line the sources call extremely important material urging a reexamination of the Osafune genealogy. The single most celebrated work is the joint naginata with Yosozaemon-no-jo Sukesada, dated Eisho 18, a bold and magnificent naginata-zukuri with the incised inscriptions Hagun-no-ken and Sanshin-soku-ittai, commissioned by Ukita Yoshie and called "a masterpiece among Sue-Bizen naginata"[[c:5]]. A katana of Daiei 3 is a joint work with his son Jirobei-no-jo Harumitsu, and the sources place his working span roughly from the Meio into the Kyoroku era[[c:6]], late in which, dated Kyoroku 2, he forged a father-and-son joint katana with another son, Shuri-no-jo Katsumitsu, prized as a record of the collaboration. Beside the flamboyant gunome he tempers a calm, broad suguha and hiro-suguha with equal command, the sources observing that the master famed for flamboyant midare through the Juyo-Bijutsuhin Asa-arashi shows, with his uncle's help, an advanced skill even in a straight temper.
What sets Katsumitsu apart within his own school is therefore the reach of his hand rather than a single tell. His bright, choji-mixed gunome distinguishes his prime from the plainer Sukesada manner, while his command of a clear suguha and his ambition outside the standard idiom mark the upper edge of late-Bizen workmanship. The clearest sign of that ambition is a signed Bunki-2 tachi, slender with sakizori, that abandons the contemporary uchigatana for a suguha-based ko-midare with ko-choji over a ko-itame in which a midare-utsuri rises; it is read as "a piece conceived with the late-Kamakura Osafune of Kagemitsu and his fellows as its aim"[[c:7]], an unusually forceful work, though the sources add that its technique does not reach its model. At the far edge a Daiei-6 tanto carries the temper up the mune into a hitatsura-like muneyaki with tobiyaki, more varied than usual. These outliers map the breadth across which the Sue-Bizen Katsumitsu hand can be known.
Katsumitsu was a productive smith and signed and dated work survives in fair number, yet little of it can ever change hands. Fujishiro grades him Sai-jo saku. He has no National Treasures; his record runs instead through one Important Cultural Property, the joint katana with his son Harumitsu held at Nogi Shrine in Tokyo and inscribed Ichigo-ikkoshi, and through the Imperial collection, where katana signed Bishu Osafune Katsumitsu are kept as Gyobutsu. The patrimony continues in the daimyo houses and old collections grounded in their own provenance, the joint naginata for Ukita Yoshie a treasured heirloom of the Sendai Date family, other blades recording owners such as Uyama Hida-no-kami and Kitamura Yukinao, the Jubi katana Asa-arashi once held by Matsushita Masatoshi. Beyond these, of the two dozen-odd designated works on record, only a small number sit in the Tokubetsu Juyo and Juyo tiers, so a signed Jirozaemon-no-jo Katsumitsu comes to market only from time to time, and a dated, devotionally carved example, the kind on which the smith once wrote that nothing could surpass it, is a rewarding thing for a collector of late Bizen to encounter.
Where Katsumitsu stands among comparable artisans: across all of nihontō, and within tradition, era, and period. The tiers (Foremost · Leading · Major · Notable) weigh official designations from the NBTHK and Japan's Agency for Cultural Affairs, together with historical honors of lasting repute such as the Sansaku and Meibutsu-chō.
Select a lens to see how it's measured.
Years he was demonstrably active, proven by signed-and-dated blades
Bizen-den · Bizen
Phase: Sue-Bizen末備前· 1441–1596
18 pieces on the market now
The last great chapter of Osafune unfolds in the Eisho and Tenbun years of the late Muromachi, when the riverside workshop turned its accumulated craft toward an age of constant war. Where Oei-Bizen had looked backward, reviving the tachi shape and the choji temper of the Kamakura masters under Yasumitsu and Morimitsu, Sue-Bizen faces forward into Sengoku demand. The leading hands carry the same family characters one generation further: the Sukesada group, headed by Yosazaemon-no-jo Sukesada and the Hikobee-jo Sukesada said to be his father, alongside Katsumitsu (often Jirozaemon-no-jo), Munemitsu, Tadamitsu of the Heiroemon-jo line, and the Kiyomitsu smiths Magoemon-no-jo and Gorozaemon-no-jo. The setsumei draw a sharp line through their output. Commissioned blades, chumon-uchi, were signed with full zokumyo, dated, and frequently inscribed with the name of the ordering party, as on the Katsumitsu and Sadamitsu naginata of Meio 8 made for the Miyake of Kojima, a house that fed into the Ukita. Below them ran the bulk trade of kazu-uchimono, the arms that supplied the warring provinces, and it is the chumon-uchi masters that the designations preserve. What the steel does in this window is distinct from every earlier Osafune register. The shape is the uchigatana: wide mihaba with thick kasane, pronounced sakizori, an extended chu-kissaki or o-kissaki, and a short nakago suited to the katate-uchi one-handed draw, a body unlike the koshizori tachi of Ko-Osafune or the broad Nanbokucho profile of Soden-Bizen. The forging tightens into ko-itame over which a midare-utsuri stands faintly rather than vividly, weaker than the bright reflection of the founding generation.
The signature temper is the open-waisted koshi-no-hiraita gunome, splitting at the heads into fukushiki compound midare and mixed with togariba and choji; it is nioi-based with ko-nie and a bright nioiguchi, with ashi, yo, kinsuji and small tobiyaki worked through. Against this, Soden-Bizen had pushed Soshu nie and notare, while the founders had tempered flamboyant choji over a vivid utsuri. Two specialties branch off the gunome base: the Kiyomitsu and Tadamitsu suguha, calm and tightly forged, and the hitatsura of high-tempered pieces with long muneyaki and yubashiri, seen in the warlord-smiths Akamatsu Masanori and Ishikawa Yukihisa. To kantei a Sue-Bizen blade is to read the body first and the temper second. The compact uchigatana sugata with thick kasane and a short tang fixes the late-Muromachi date; the faint utsuri over dense ko-itame keeps it in Bizen; the open-waisted compound gunome names the group. The masters then separate by hand: Katsumitsu is set apart by the abundant choji he folds into the gunome, yielding a more florid, brilliant dekiguchi than his peers; Tadamitsu and the Kiyomitsu smiths are read out by their suguha, with Magoemon-no-jo's itame standing in mokume to distinguish his ground. The cutting reputation is documented directly, as on the Hikobee-jo Sukesada katana of Keicho 5 carrying a tameshi inscription naming the tester Ichihara Hachibee. Provenance threads through the supplementary signatures: Masanori's reward blades cut for his retainers, the Miyake names tying the workshop to the Ukita, and the Shinjuro Sukesada whose few large works may have ended in the Tensho flood. The horimono carried from the mainline, bonji with rendai, Fudo Myoo, and shrine dedications, persist on these blades as a final mark of the line. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Katsumitsu勝光 | 1490-1529 | 28 |
| Katsumitsu勝光 | 1469-1487 | 9 |
| Katsumitsu勝光 | 1528-1532 | 0 |
| Katsumitsu勝光 | 1492-1501 | 2 |
Bizen in the Muromachi period
War at home and trade abroad made Muromachi Bizen the busiest forge region in Japan: a century of Sengoku demand after the Ōnin War, and export missions to Ming China carrying blades by the tens of thousands.
A Hozon-certified blade judged to show notably superior workmanship and a better state of preservation. The bar is higher: re-tempered blades and most unsigned Muromachi/Edo works are excluded.
The NBTHK (Nihon Bijutsu Tōken Hozon Kyōkai, the Society for the Preservation of Japanese Art Swords) is a public-interest incorporated foundation founded in 1948 and supervised by Japan’s Agency for Cultural Affairs (Bunkachō); it is based at the Japanese Sword Museum in Tokyo. Its expert panels physically examine each submitted work (shinsa) and issue a certificate (kanteishō) ranking it by artistic and historical merit. NBTHK papers are the most widely recognized standard of authentication for Japanese swords and fittings.
NBTHK official siteAll swords come with a three-day inspection period beginning from the date of delivery. If not satisfied, the sword may be returned within this period for a full refund of the purchase price. Outside of this period, all sales are final. Swords purchased on a layaway payment plan are not eligible for the three-day inspection period.
This katana by 5th generation Bizen no Kuni-jû Osafune Jirôzaemon no Jô Katsumitsu is dated to August 1505 and features a kenmaki-ryû horimono. It is renowned for its extraordinary sharpness, evidenced by a gold-inlaid cutting test inscription on the nakago from 1656, recording it severed through numerous bodies. The blade exhibits a bright suguha hamon with ko-ashi, vivid midare-utsuri, and kinsuji, housed in a splendid Late Edo period handachi koshirae with Mino school fittings.
NihontoWatchmei · Osafune, Bizen · Sue-kotô · Late Muromachi (eishô era: 1504-1521) · nagasa 62.3cm · sori 1.5cm
Osafune (Sue-Bizen), Bizen · Bizen · around 1490-1529
Fujishiro Sai-jo saku · Tōken Taikan top 14%
1 piece on the market now
On a katana of Eisho 9 (1512), beneath the long signature of Jirozaemon-no-jo Fujiwara Katsumitsu, the smith added a phrase of his own: "as far as my heart can reach, nothing could surpass this"[[c:1]], declaring the blade a work that fully satisfied him. The maker of that boast is the most accomplished bearer of a crowded name. The published sources record that several generations and more than a dozen smiths used the name Katsumitsu among the late-Muromachi Osafune forges collectively called Sue-Bizen, and that within that crowd the branch titled Jirozaemon-no-jo, the son of Ukyo-no-suke Katsumitsu, is especially accomplished, counted with Yosozaemon-no-jo Sukesada and Gorozaemon-no-jo Kiyomitsu as a representative smith of the late Bizen tradition.
What the published sources name as his individuality is a matter of degree within a shared idiom. Every Sue-Bizen smith tempers the open-waisted, double-structured gunome, the fukushiki-gunome that is the diagnostic late-Bizen line; Katsumitsu builds his prime on the same base, well-packed ko-itame carrying ji-nie and fine chikei, over which the temper rides high and bright with ashi and yo entering richly, the nioiguchi clear and tightening, small tobiyaki interspersed. The distinction the judges draw is that he mixes choji into that gunome more freely than his fellows, for a more flamboyant effect. "Compared with Sukesada," the sources write, "Katsumitsu shows more conspicuous choji in the temper, and the so-called crab-claw (kani-no-tsume) irregularities appear relatively less often"[[c:2]]. On his finest dated wakizashi the same point is put positively: he is "particularly adept at a more splendid workmanship in which abundant choji are intermingled within the midare"[[c:3]].
The jigane is the constant beneath that flamboyance. It is the well-packed ko-itame of late Osafune, ji-nie attaching, chikei finely woven, in places a little standing or flowing; on the best pieces the ji-nie lies fine as dust (ji-nie michin). The classical midare-utsuri of old Bizen has largely gone from this late steel and appears only faintly on a few blades; one Eisho-2 katana is read as showing little utsuri precisely because the ji-nie is so strong, so that the jigane itself looks powerful. The boshi answers the hamon, running midare-komi to a ko-maru or a pointed tendency, hakikake at the tip and a turnback. Across both faces lie the devotional carvings of Sue-Bizen, a kurikara, bonji with suken, and shrine names such as Hachiman Daibosatsu and Amaterasu Kotaijin, which the sources are careful to call the work of collaborating horimonoshi rather than the smith's own hand.
Katsumitsu is, above all, the great collaborator of the house, and his record is largely one of joint work. With his brother Sakyo-no-shin Munemitsu he cut the blades long prized as Munekatsu gassaku, the two names signed together on katate-uchi uchigatana and wakizashi; on one Eisho-7 wakizashi the inscription explicitly reads "younger brother, Sakyo-no-shin Munemitsu"[[c:4]], a line the sources call extremely important material urging a reexamination of the Osafune genealogy. The single most celebrated work is the joint naginata with Yosozaemon-no-jo Sukesada, dated Eisho 18, a bold and magnificent naginata-zukuri with the incised inscriptions Hagun-no-ken and Sanshin-soku-ittai, commissioned by Ukita Yoshie and called "a masterpiece among Sue-Bizen naginata"[[c:5]]. A katana of Daiei 3 is a joint work with his son Jirobei-no-jo Harumitsu, and the sources place his working span roughly from the Meio into the Kyoroku era[[c:6]], late in which, dated Kyoroku 2, he forged a father-and-son joint katana with another son, Shuri-no-jo Katsumitsu, prized as a record of the collaboration. Beside the flamboyant gunome he tempers a calm, broad suguha and hiro-suguha with equal command, the sources observing that the master famed for flamboyant midare through the Juyo-Bijutsuhin Asa-arashi shows, with his uncle's help, an advanced skill even in a straight temper.
What sets Katsumitsu apart within his own school is therefore the reach of his hand rather than a single tell. His bright, choji-mixed gunome distinguishes his prime from the plainer Sukesada manner, while his command of a clear suguha and his ambition outside the standard idiom mark the upper edge of late-Bizen workmanship. The clearest sign of that ambition is a signed Bunki-2 tachi, slender with sakizori, that abandons the contemporary uchigatana for a suguha-based ko-midare with ko-choji over a ko-itame in which a midare-utsuri rises; it is read as "a piece conceived with the late-Kamakura Osafune of Kagemitsu and his fellows as its aim"[[c:7]], an unusually forceful work, though the sources add that its technique does not reach its model. At the far edge a Daiei-6 tanto carries the temper up the mune into a hitatsura-like muneyaki with tobiyaki, more varied than usual. These outliers map the breadth across which the Sue-Bizen Katsumitsu hand can be known.
Katsumitsu was a productive smith and signed and dated work survives in fair number, yet little of it can ever change hands. Fujishiro grades him Sai-jo saku. He has no National Treasures; his record runs instead through one Important Cultural Property, the joint katana with his son Harumitsu held at Nogi Shrine in Tokyo and inscribed Ichigo-ikkoshi, and through the Imperial collection, where katana signed Bishu Osafune Katsumitsu are kept as Gyobutsu. The patrimony continues in the daimyo houses and old collections grounded in their own provenance, the joint naginata for Ukita Yoshie a treasured heirloom of the Sendai Date family, other blades recording owners such as Uyama Hida-no-kami and Kitamura Yukinao, the Jubi katana Asa-arashi once held by Matsushita Masatoshi. Beyond these, of the two dozen-odd designated works on record, only a small number sit in the Tokubetsu Juyo and Juyo tiers, so a signed Jirozaemon-no-jo Katsumitsu comes to market only from time to time, and a dated, devotionally carved example, the kind on which the smith once wrote that nothing could surpass it, is a rewarding thing for a collector of late Bizen to encounter.
Where Katsumitsu stands among comparable artisans: across all of nihontō, and within tradition, era, and period. The tiers (Foremost · Leading · Major · Notable) weigh official designations from the NBTHK and Japan's Agency for Cultural Affairs, together with historical honors of lasting repute such as the Sansaku and Meibutsu-chō.
Select a lens to see how it's measured.
Years he was demonstrably active, proven by signed-and-dated blades
Bizen-den · Bizen
Phase: Sue-Bizen末備前· 1441–1596
18 pieces on the market now
The last great chapter of Osafune unfolds in the Eisho and Tenbun years of the late Muromachi, when the riverside workshop turned its accumulated craft toward an age of constant war. Where Oei-Bizen had looked backward, reviving the tachi shape and the choji temper of the Kamakura masters under Yasumitsu and Morimitsu, Sue-Bizen faces forward into Sengoku demand. The leading hands carry the same family characters one generation further: the Sukesada group, headed by Yosazaemon-no-jo Sukesada and the Hikobee-jo Sukesada said to be his father, alongside Katsumitsu (often Jirozaemon-no-jo), Munemitsu, Tadamitsu of the Heiroemon-jo line, and the Kiyomitsu smiths Magoemon-no-jo and Gorozaemon-no-jo. The setsumei draw a sharp line through their output. Commissioned blades, chumon-uchi, were signed with full zokumyo, dated, and frequently inscribed with the name of the ordering party, as on the Katsumitsu and Sadamitsu naginata of Meio 8 made for the Miyake of Kojima, a house that fed into the Ukita. Below them ran the bulk trade of kazu-uchimono, the arms that supplied the warring provinces, and it is the chumon-uchi masters that the designations preserve. What the steel does in this window is distinct from every earlier Osafune register. The shape is the uchigatana: wide mihaba with thick kasane, pronounced sakizori, an extended chu-kissaki or o-kissaki, and a short nakago suited to the katate-uchi one-handed draw, a body unlike the koshizori tachi of Ko-Osafune or the broad Nanbokucho profile of Soden-Bizen. The forging tightens into ko-itame over which a midare-utsuri stands faintly rather than vividly, weaker than the bright reflection of the founding generation.
The signature temper is the open-waisted koshi-no-hiraita gunome, splitting at the heads into fukushiki compound midare and mixed with togariba and choji; it is nioi-based with ko-nie and a bright nioiguchi, with ashi, yo, kinsuji and small tobiyaki worked through. Against this, Soden-Bizen had pushed Soshu nie and notare, while the founders had tempered flamboyant choji over a vivid utsuri. Two specialties branch off the gunome base: the Kiyomitsu and Tadamitsu suguha, calm and tightly forged, and the hitatsura of high-tempered pieces with long muneyaki and yubashiri, seen in the warlord-smiths Akamatsu Masanori and Ishikawa Yukihisa. To kantei a Sue-Bizen blade is to read the body first and the temper second. The compact uchigatana sugata with thick kasane and a short tang fixes the late-Muromachi date; the faint utsuri over dense ko-itame keeps it in Bizen; the open-waisted compound gunome names the group. The masters then separate by hand: Katsumitsu is set apart by the abundant choji he folds into the gunome, yielding a more florid, brilliant dekiguchi than his peers; Tadamitsu and the Kiyomitsu smiths are read out by their suguha, with Magoemon-no-jo's itame standing in mokume to distinguish his ground. The cutting reputation is documented directly, as on the Hikobee-jo Sukesada katana of Keicho 5 carrying a tameshi inscription naming the tester Ichihara Hachibee. Provenance threads through the supplementary signatures: Masanori's reward blades cut for his retainers, the Miyake names tying the workshop to the Ukita, and the Shinjuro Sukesada whose few large works may have ended in the Tensho flood. The horimono carried from the mainline, bonji with rendai, Fudo Myoo, and shrine dedications, persist on these blades as a final mark of the line. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Katsumitsu勝光 | 1490-1529 | 28 |
| Katsumitsu勝光 | 1469-1487 | 9 |
| Katsumitsu勝光 | 1528-1532 | 0 |
| Katsumitsu勝光 | 1492-1501 | 2 |
Bizen in the Muromachi period
War at home and trade abroad made Muromachi Bizen the busiest forge region in Japan: a century of Sengoku demand after the Ōnin War, and export missions to Ming China carrying blades by the tens of thousands.
A Hozon-certified blade judged to show notably superior workmanship and a better state of preservation. The bar is higher: re-tempered blades and most unsigned Muromachi/Edo works are excluded.
The NBTHK (Nihon Bijutsu Tōken Hozon Kyōkai, the Society for the Preservation of Japanese Art Swords) is a public-interest incorporated foundation founded in 1948 and supervised by Japan’s Agency for Cultural Affairs (Bunkachō); it is based at the Japanese Sword Museum in Tokyo. Its expert panels physically examine each submitted work (shinsa) and issue a certificate (kanteishō) ranking it by artistic and historical merit. NBTHK papers are the most widely recognized standard of authentication for Japanese swords and fittings.
NBTHK official siteAll swords come with a three-day inspection period beginning from the date of delivery. If not satisfied, the sword may be returned within this period for a full refund of the purchase price. Outside of this period, all sales are final. Swords purchased on a layaway payment plan are not eligible for the three-day inspection period.
