56| Nanboku-Cho Tanto (南北朝短刀)

This is a detailed part of chapter 20.  Please read 20 | Nanboku-Cho Tanto(南北朝短刀)  first, before reading this chapter.


20 Enbun Jyoji Kowakizashi Tanto

The characteristic of the picture above, the shape is emphasized in the drawing.

At the end of chapter 20 | Nanboku-Cho Tanto(南北朝短刀, there is a list of swordsmith’s names.  Hiromitsu and Akihiro represent the most common characteristic of Nanboku-Cho Tanto.

56 cropped Hiromitu photo 20 HitatsuraHiromitsu From Sano Museum Catalogue (permission granted)


Enbun Jyoji Ko-wakizashi Tanto is also called Sun-Nobi Tanto.  The top part of the Tanto bends outward slightly, this is called Sakizori.

Hiromitu and Akihiro Characteristic

Shape———-wide width.  Usually 1 foot and 1, 2 inches long.  Thin body.  Sakizori

Hamon ——-Tempered line can be wide and narrow.  Yakidashi (1, 2 inches above a Machi area) is narrowly tempered and wider tempered line above.  Hamon around Fukura area is showy.  Mainly Nie.  Sunagashi, Kinsuji, Gunome, Umanoha-Midare (shape like horse teeth), Hitatsura appears (see above drawing).

Boshi———-Irregular, uneven temper line, the almost entire area. Deep turn back.

Jihada ———Wood grained

Nakago ——-Tanago-Bara shape (refer 20 | Nanboku-Cho Tanto(南北朝短刀).


The first generation Shodai Nobukuni is the top three students of Sadamune.  He is called Sadamune San Tetsu (貞宗三哲).     The characteristic of Nobukuni is almost the same as the characteristic of Hiromitsu and Akihiro.  Nobukuni also created Sun-nobi  Tanto like the one below which has a Hoso-suguha (narrow straight tempered line), Ko-Mokume (fine small burl),  Ko-maru Boshi (small round)

56 Nobukuni 1 Nobukuni4 56 Nobukuni 2

This is my sword.  Shodai Nobukuni (初代信國).  This is Juyo Token


number Juyo 3220,    Certification Juyo-Token

Wakizashi  Nobukuni,    31.4cm length, 0.3cm curvature, HirazukuriMitsumune (three-sided Mune ),  Sunnobi, Ji-hada is Wood grain and Jinie (Nie on the surface)Hamon is Chu-Suguha ( medium straight),  Front carving shows Bonji (Sanscrit), Sanko-Ken. The back side of the sword, engraving is Sanscrit and Hoko (pike).   Original Nakago.    The examination by the Nihon Bijutu Token Hozon Kyokai.  It is certified as Juyo-Token.  The Chairman Moritatu Hosokawa



50|Part 2 of —– 15|Late Kamakura Period Sword

This chapter is the detailed part of chapter 15| Late Kamakura Period Sword.  Please read chapter 15 before this section.

14 Ikubi kissaki Damadge

As I explained in chapter 14 Late Kamakura Period History (鎌倉後期), Ikubi Kissaki sword shows a flaw (above illustration) when the damaged area was repaired.  To compensate for this flaw, in Late Kamakura Period, swords smiths started to forge swords with longer Kissaki and a tip of Hi ends lower than Yokote-line.  So that in case the Yokote-line was lowered after the repair, Hi does not go higher than Yokote-line

15 Masamune (Sano)15 Masamune hamon (Sano)

Above photo is Goro Nyudo Masamune( 五郎入道正宗 ).  Please look at the size and shape of Kissaki.  This is definitely different than previous Ikubi Kissaki, or Ko-Gissaki.  This is a typical late Kamakura period Kissaki style.  This is O-Suriage (largely shortened).  Under Kamakura Bakufu, many swordsmiths moved to Kamakura.  They were Toroku Sakon Kunituna (藤六左近国綱 ) of Yamashiro Awataguchi  group(山城粟田口),  Fukuoka Ichimonji Sukezane (福岡一文字助真) and Kunimune (国宗 )of Bizen area.  They are the origin of Soshu-Den (相州伝).  Eventually, Tosaburo Yukimitsu (藤三郎行光)  appeared and his son is the famous Masamune (正宗)On the illustration above, Kinsuji, Inazuma is shown inside the Hamon.  The clear line inside the Hamon is Inazuma and Kinsuji.  Kinsuji, Inazuma are the collection of Nie looks like a line.  Masamune is famous for Inazuma, Kinsuji.  Masamune lived in Kamakura, his Hamon looks like an ocean wave when it is viewed sideways.

50 part 2 of 15 吉岡.photo50 part 2 of 15 吉岡

The above picture is Yoshioka Ichimonji (吉岡一文字).  Kissaki is also like the one of Masamune.  It is longer than previous Ikubi Kissaki or Ko-Gissaki.  This is Chu-Gissaki.  Kissaki like this is the important point to determine what period the sword was made.  Hamon has Choji, Gunome, Togariba (pointed tip), very tight Nie.


50 part 2 of 15 運生 photo50 part 2 of 15 運生 

Above photo is Ukai Unsho (鵜飼雲生).  This is also the sword from the late Kamakura period.  But it has Ko-Gissaki.  This sword does not have the late Kamakura period Chu-Gissaki style.  Narrow Hoso-Suguha is somewhat like earlier time than the late Kamakura period.  I chose this sword here to show that the sword does not always have the style of that period.  To Kantei*, first, look at the style and shape and give yourself some idea of the period of the time you think it was made.  But in this case, Kissaki does not indicate late Kamakura periodNext thing to do is to look at the different characteristic of the sword one by one like Hamon, Nie or Nioi, Jihada, etc,  and determine what period, which Den, which province and finally come up with a swordsmith’s name.  This process is called Kantei.

*Kantei – – – – – – to determine the name of the swordsmith by looking at the characteristic of the sword without looking at the Mei (inscription).  Mei is not always there either because it is shortened or some other reasons.

All the photos above are from Sano Museum Catalogue.  Permission to use is granted.

48|Part 2 of —– 13|Middle Kamakura Period Tanto 鎌倉中期短刀

This chapter is a continued part of Chapter 13 Tanto Middle Kamakura PeriodPlease read Chapter 13 before you read this section.  13|Tanto ( 短刀) Middle Kamakura Period

As Chapter 13 described, during middle Kamakura period, the shape of Tanto is called Takenoko zori . That means the tip of Tanto curves inward a little.  The drawing on Chapter 13 is a little exaggerated to show the curve.  Refer 13|Tanto ( 短刀) Middle Kamakura Period.   But the real Tanto is not so obvious. Maybe a few millimeters.   Usually, the length of the Tanto is approximately 12 inches or less.  10 inch Tanto is called Jyosun (定寸 ), longer than that is called Sun-nobi (寸延び ), and less than that is called Sun-zumari (寸詰り )


13 «Part 2» Tanto photo 

The above photo is Tanto by Shintogo Kunimitsu (新藤五国光). This style is called Kanmuri Otoshi.  That means the steel of Mune side (opposite side of cutting edge)  is shaved off. The length is approximately 10 inches.  Wood grain surface, Nie on Ji (refer to the name of the parts 4 |Names of Parts ).  Very finely forged.  Hamon is medium Suguha (straight).  Boshi is Ko-maru (small round).  Because of the Kanmuri-Otoshi style, it may not be easy to see the Takenoko-zori, the Mune side bend inward very slightly.  Among Tanto producer, Shintogo Kunimitsu is considered the top Tanto Maker.


13 «Part 2»Tanto photo with Saya

Above photo is the same Shintogo Kunimitsu with Saya.  Saya is a scabbard.  The top white handle part is made with Sharkskin.  Both photos are from Sano Museum Catalog.  Permission granted.




40|Part 2 of —– 6|Heian Period Sword (792-1192)

This chapter is the continued part of chapter 6.  Please read Chapter 6 before reading this section.  I will be using more technical terms which were explained between chapter 1 to 33.  For those who are not familiar with sword terms, any of part 2 should be read after chapter 1 to 33.

There are several schools (called Den 伝 ) of swordsmith during the Heian period.    I will start using the word Den instead of school.  They are Yamashiro Den (山城伝  ), Yamato Den (大和伝), Bizen Den ( 備前伝 )、Hoki-no-Kuni (伯耆 )、Buzen group (豊前 ), and Satsuma-no-Kuni (薩摩).

Yamashiro Den (山城伝 )

Among Yamashiro Den, the name of the sword, Mikazuki Munechika (三日月宗近  ) by Sanjo Munechika (三条宗近 ) is the most famous.  Mikaduki means crescent.  Because Mikaduki shape Uchinoke (collection of Nie) pattern appears on Hamon, it is named Mikazuki Munechika.  It has graceful shape, narrow body, Koshizori, Funbari, and small Kissaki.  It shows wood grain surface, Suguha with Nie mixed with small irregular, sometimes nijyu-ha (double libe二重刃 ) appears.  Sanjo Munechika lived Sanjo area in Kyoto.  His sword style was followed by his sons and grandsons, Sanjo Yoshiie (三条吉家   ), Gojo Kanenaga (五条兼永), Gojo Kuninaga (五条国永 ). Gojo is the area in Kyoto. 

6 photos Sanjo Munechika

三日月宗近         東京国立博物館蔵      “刀剣のみかた” 広井雄一      Mikaduki Munechika Tokyo National Museum  “Token no mikata” by Yuichi Hiroi


Houki -no-Kuni (伯耆の国 )

Houki-no-Kuni is today’s Tottori prefecture.  This place is known for the place producing good steel.  The sword name, Doujigiri Yasutsuna  (童子切安綱 ) by Houki-no-Yasutsuna is the most famous one.

The characteristics of Yasutsuna’s sword———-It has a graceful shape with small Kissaki, narrow Hamon (often sugu-ha with ko-choji), course Nie on Hamon area, large wood grain mixed with masame on Ji-hada.   Hamon area often shows Inazuma and KinsujiBoshi area is Yakizume, Kaen with small turn back.

6 Sano Hoki Yasutuna

伯耆の安綱 (Hoki no Yasutsuna) 佐野美術館図録 (Sano Musem Catalogue)

Bizen Den (備前伝 )

Bizen is Okayama prefecture today.  Bizen is known for producing good steel.  Since Heian period until now, Bizen has been famous for the sword making tradition.  The sword making group in this area during the Heian period were called Ko-Bizen group.  The most famous sword smith in Ko-Bizen group is Bizen Tomonari (備前友成 ) and Bizen Masatsune (備前正恒) and Bizen Kanehira (備前包平)                                                                      

The characteristics of Ko-Bizen group———-graceful narrow-body, small Kissaki, narrow tempered line with ko-choji (small irregular) with Inazuma and Kin-suji.  Ji-Hada is small wood grain pattern.

6 Sano Kanehira

Bizen Kanehira (備前包平) Sano Museum Catalogue (佐野美術館図録)


I saw Ko-Bizen Sanetsune (真恒 ) at Mori Sensei’s house.  That was the one of the Kantei-To of the day.  I received Douzen*ᴵ.  The book written by Honami Koson was used as our textbook.  Each time I saw a sword at Mori Sensei’s house, I put down the date on the swordsmith’s name in this book where the author explains about the smiths.  It was Nov. 22, 1970.  The deciding point was a narrow-body line, small Kissaki (that is Ko-Bizen Komaru), Kamasu and Suguha.  Kamasu is the condition where the fukura of Boshi is much less, less rounded.  When I think back, it is amazing we could see the sword like those for our study materials.  Today, I forget things happened a week ago, but I can remember each sword I saw in those days.


Kantei-Kai is the study meeting.  Usually, several swords were displayed hiding the Nakago.  The attendees guess the name of the sword maker and hand in the answer sheet to the judge.  The below is the grade.

Atari—–If the answer is the right on the exact name, you get Atari, that is the best answer.

Douzen*ᴵ—-The second one is Dozen, that is the subject sword made by the family, clan or within the group.  It means almost right.  Dozen is considered very good.

Kaido-Yoshi—–  This means the same line, but not within the family.

Hazure—– Wrong

Jidai Yoshi—-Each Kanntei-Kai has different grading systems.  Some have Jidai Yoshi, that means the time or period is correct.

After all the answer is handed in and answer sheet is returned to the attendee, the judge reveals the right answer and explains about each sword.






29|Seven Main Areas of Sin-To Sword (partB)

27 Shinto time line
    The circle indicate the subject of this chapter

28 map with number

 2  Settu (摂津 ) at Osaka ( 大阪 )

Settu, Osaka created more Wakizashi than Katana. They tend to make slightly Sakizori ( outward curvature above half way) and slightly stretched BoshiSettu Osaka sword also has Yakidashi like the previous Yamashiro Kyoto sword, except the area where Suguha changes to Notare (wavy pattern) is smooth.  This is called Osaka Yakidashi.  Illustration below.

Osaka Boshi—– Hamon continues up to Yokote line, then Komaru with a turn. Jitetsu —–Very fine, almost solid like surface especially Shinogi-ji (the area between ridgeline and back) is solid like surface.  This is called Osaka-Tetsu (iron)

29 Osaka Yakidashi Komaru Boshi

Well known swordsmiths in Settsu area are Osaka-Tsuda –Sukehiro (大阪津田助広), Sukenao (助直). Ikkanshi Tadatsuna (一竿子忠綱 )


Awataguchi Ikkanshi Tadatsuna (粟田口一竿子忠綱 ) Previousely family owned


3.Musashi ( 武蔵 ) at Edo ( 江戸 )

Both Katana and Wakizashi have shallow sori (less curvature).  Often top area tends to narrow down.  Often but not always, unlike Settsu or Yamashiro, Hamon starts out the same design as the rest of the entire design except a little bit gentler.  Boshi is the same as Kyo-Boshi.  Jitetsu is almost the same as Kyoto.  Masame shows on Shinogi-ji.

Well known swordsmiths in Musashi area are Nagasone-Okisato-nyudo-Kotetsu (長曽根興里入道虎徹), Noda Hannkei (野田繁慶  ).


Nagasone-Okisato-nyudo-Kotetsu (長曽根興里入道虎徹) Previously family owned

4. Echizen ( 越前 ) and Kaga (加賀 )

Many sword makers of Echizen and Kaga moved from Mino (美濃 )area.  Their style of Echizen Yasutsugu  is similar to Mino style.  Because of that, the sword made in this area are called Echizen- Seki, and Kaga-Seki. (refer to 24|Sengoku Period (戦国) Sword. )

Well known swordsmith in Echizen is Echizen Yasutsugu (越前康継 )

5.  Hizen (肥前)

Both Katana and Wakizashi have well-balanced shape. Hizen area tends to make a sword with Chu-Suguha-Hoture (medium width straight Hamon with the frayed look) with fine Nie (沸). Boshi has a standard and ordinary clean line with the tempered line of uniform width. Shinto sword with Chu-Suguha is often made by Hizen Tadayoshi (肥前忠吉). Very fine Ji-tetsu (surface), sometimes called Nukame-Hada.

29 Hizen Tadayoshi Boshi

Well known swordsmith in this area is Hizen Tadayoshi ( 肥前忠吉)


6.  Satsuma (薩摩 )

The sword made in Satsuma has a sound shape on both Katana and Wakizashi. Kissaki (the point area) is stretched. Yakidashi (a few inches of the tempered area above Machi ) is small irregular that is similar to Koto. Hamon is O-midare with coarse Nie. Togari-ba (pointed design) appears with coarse Nie. Mino school often have Togari-ba. One of the characteristics of this region is Satsuma-nie. It means that the coarse Nie around Hamon continued into Ji-hada area.  Inside Hamon, sometimes shows a thick line shaped like lightning.  This is called Satsuma-no-Imozuru (sweet potato vine of Satsuma). This is the biggest characteristic of Satsuma sword. Boshi has a narrow tempered line with the small irregular pattern, similar to Koto, this is called Satsuma-Boshi. On  Jitetsu (surface) Satsuma-gane (薩摩金) sometimes shows that is a dark line like Chikei .

29 Satsuma Togari-ba

Well know swordsmiths of this area are Izunokami Masafusa (伊豆守正房  ),  Ichinohira Masayoshi ( 一平安代 ), Mondonosho Masakiyo (主水正正清 )

20 | Nanboku-Cho Tanto(南北朝短刀)

18 Nanbokucho time line

The circle indicates the time we are discussing in this section

The type of Tanto during Nanboku-Cho Period was called  Hirazukuri-Kowakizashi-Sunnobi- Tanto.   Hirazukuri means flat sword without Yokote line and without Shinogi. Ko-Wakizashi means shorter sword. Sunnnobi Tanto means longer Tanto. This is called Enbun Jyoji Kowakizashi Tanto.  Because the majority of this type of shape was made around Enbun, Jyoji Imperial era.  Each time the Emperor changed, Japan changed the names of the era.  Enbun was from 1356 to 1361, Jyoji was from 1362 to 1368.

20 Enbun Jyoji Kowakizashi Tanto

Shape (Sugata 姿) ——-Usually approximately 1 foot 1 or 1 foot 2 inches long.  Sakizori (curved at the top.  Look at the illustration above).  Wide width and thin body.  Fukura Kareru (No Fukura). Shin-no-Mune.

20 Fukura20 Shin-no-Mune

Hi, Horimono (Goove and engraving 樋, 彫刻) —– Groove on Mune side.  Bonji (sanscrit, refer 17 Bonji Suken), Koshi-bi (Short goove) and Tokko- tsuki Ken, or Tumetuki Ken (see below). Ken (spear) was curved wide and deep at the upper part, lower part was curved shallow and narrower.  This is called Soshu-bori.

20 Tokko, tume Ken

Hamon (Tempered line) —– Narrow tempered area at the lower part, it gradually grows wider as it goes up higher then it becomes Bodhi design.  Hamon in Kissaki area is Kaeri Fukashi (turn back deep) as the illustration below.  Coarse Nie. O-Midare (large irregular pattern).

20 Hitatsura

From Sano Museum Catalogue (permission granted)


Jitetsu or Jihada —– Loose wood grain pattern called Itame.  Yubashiri (refer 17 Yubashiri, Chikei.jpg), Tobiyaki (Irregular patches of tempered metal) appears.  Crowded Tobiyaki is called Hitatsura (illustration above).

Nakago (Tang) —- Short Tanago-bara.

20 Tanago Bara

Sword-smiths during Nanboku-Cho Period Soshu Den(school)

Soshu Den ———————————————————-Hiromitu( 広光) Akihiro (秋広) Yamashiro Den ————————————————–Hasebe Kunishige (長谷部国重)   Bizen Den ——————————————————— Kanemitu (兼光) Chogi (長義 ) Arima Province ——————————————————Hojoji Kunimitsu (法城寺国光 )

20 Hiromitu (Sano Museum)

19|Nanboku-Cho (North and South dynasty) Period Sword

18 Nanbokucho time line

                           The circle indicate the time we are discussing in this section

During Nanboku-Cho period, Samurai demanded large, elaborate and practical swords. Soshu Den style — elaborate, large, and impressive  —became the most popular style. Nanboku-Cho period was the height of the Soshu Den.  Many sword smiths moved to Kamakura and forged Soshu Den style swords.  Other schools and provinces also made Soshu Den style swords in their own places.

19 Nanboku-cho Sword style


Shape (Sugata 姿)—-Originally the length of the swords were 3, 4, 5, feet long, but shortened to approximately two and a half feet in the later time. Shortening a sword greatly is called O-Suriage.  Nanboku-Cho sword has a shallow Kyo-zori (also called Torii-zori) shape (refer 6. Heian period)highest curvature comes around the center of the body.  Wide body, high Shinogi, and narrow Shinogi-Ji (refer 4 Names of parts) and thin body.  High Gyo-no-Mune or Shin-no-Mune, sometimes Maru-Mune (round back).

19 Nanboku-cho 3 kinds Mune

Hi, Horimono (groove and engraving 樋, 彫刻)—– On Shinogi-Ji (refer 4 Names of parts) area, often appears Bo-hi (one groove), double hi, Bonji (Sanscrit), spear, Dragon engraved

9 Hi, Suken, Bonji

Hamon (Tempered line) —– Lower area of the body shows narrow tempered line, higher area of the body shows wider showy tempered line.  Course Nie.  O- Midare (large irregular), Notare-Midare (wavy irregular), Gunome-Midare (repeating pattern of half circular and irregular mix).  Inazuma, Kinsuji (refer 15 Late Kamakura Period sword) action appears


19 Hamon Notare 319 Mamon choji gunome

*From Sano Museum Catalogue ( Permission granted).


Jitetu or Jihada (between tempered line and Shinogi) (4 Names of parts)——Wood grain pattern (Itame 板目). Tobiyaki (patchy tempered spot in jihada) appears.

Boshi, Kissaki —– O-Kissaki (Stretched long Kissaki). Fukura kareru (no Fukura). Midare-Komi (tempered line continues into Boshi), with kaeri fukashi (look at the illustration above),  sometimes Ichimai (tempered entire Boshi).  Look at the above illustration.

Sword-smiths during Nanboku-Cho Period Soshu Den (school)

From Soshu————————————————————Hiromitu (広光) Akihiro (秋広  ) From Yamashiro ————————————————–Hasebe Kunishige (長谷部国重)  From Bizen (called So-den Bizen)————-Chogi (長儀 )group, Kanemitu (兼光 ) group From Chikuzen —————————————————————Samoji (左文字 ) 19 Chogi photo from Sano book

10 | Middle Kamakura Period — Bizen School(鎌倉中期備前伝)

There are large numbers of swordsmiths in Bizen (備前) school during the Heian period but their sword style is generally similar to Yamashiro school, called Ko-Bisen (古備前). The real Bizen school style started from Middle Kamakura period.  Bizen province had many ideal conditions to produce swords.  It produced good quality steel and a large amount of fuel around the area and also the transportation was convenient.  Naturally, large numbers of swordsmiths gathered in this area and produced swords in quantities.  Because of that, to connoisseur Bizen sword is difficult.  Bizen sword has a higher standard.

Generally speaking, the next three characters are the most distinctive features of Bizen school.

  • Nioi base temper line (Nie is sand like small dots on a tempered line, Nioi is finer dots than Nie, so small, it looks as if a line)  Technically speaking, those two are the same.  See the illustration below.
  • Jigane (sword steel) looks soft.
  • Reflection appears on the surface.

10 Nie & Nioi

Sugata (shape) — Length of the sword is about 33 inches ± a few inches. The width of the blade is slightly wide and it has stout look.  The curvature of the blade is Koshizori (腰反)  means the highest curvature comes lower part.  The body has average thickness.  Small kissaki.

10 Middle Kamakura ---備前刀姿

Horimono(engraving) — Engravings are rare. The shape of the tip of Hi is all the way up to Ko-shinogi and fill up the whole area.

9 Hi --- groove

Nakago — Long and thin with curvature. The end of the Nakago is rounded which has the shape of chestnut’s bottom.  This is called Kurijiri. Look at the illustration of the sword above.

Hamon (tempered area pattern)— Nioi base. The tempered area is wide and the width is even, also the size of midare (irregular tempered line ) is uniform.

Boshi — Same tempered pattern continue to go up to Boshi area.  You can see Choji midare (clove-like pattern) or Yakizume.

10 Boshi --- Bizen

Bizen School Sword Smiths during Middle Kamakura Period

Fukuoka Ichimonji (福岡一文字) group ———- Norimune (則宗)   Sukemune (助宗 )Yoshioka Ichimonji (吉岡一文字) group ———-Sukeyoshi (助吉)   Sukemitsu (助光)         Sho-chu Ichimonji (正中一文字) group ———   Yoshiuji (吉氏)   Yoshimori (吉守)      Osafune (長船) group —–Mitsutada (光忠) Junkei Nagamitu (順慶長光) Kagemitsu (景光)Hatakeda hatakeda(畠田) group —————-Moriie (守家)  Sanemori  (真守)                Ugai (鵜飼) group —————————————-   Unsho (雲生) Unji (雲次)

6 |Heian Period Swords


                         The circle indicate the time we are discussing in this section

This is the time, the shape of the swords changed to curved shape.  Until this time, swords were straight.

The study of swords is the swords made from the Heian period on.  Elegant and graceful taste of Fujiwara culture reflects on the swords made during the Heian period.  Their preference of their lifestyle reflected vividly on the swords.  A group of the sword smiths in Kyoto area was called Yamashiro school.  Their style of the swords had a graceful shape.  During the Heian period, Yamashiro Den (school) represents the Heian period sword style.

6a Heian period sword style


General Heian period sword style

Shape———-Lengths of the swords are approximately 30 inches ± a couple of inches.  Elegant and graceful shape.  The width of the blade is narrow.  Small Kissaki(小切先), Kyo-zori (京反り) and deep curvature.  Kyo-zori means the highest curvature comes around the halfway of the blade.  Lower part of the sword has A-line curve (flare out) that is called funbari (踏ん張り).  Deep curvature.

6b A line bottom

Hamon(刃文)———-Hamon means tempered line.  The Heian period tempered area is narrow,  and usually, suguha (直刃), means straight hamon.  Nie (沸) base.  Nie is a tiny granule like a particle on the border of the tempered line.  If you look closely, fine sand-like particles are visible. 6 Straigh tempered line(Suguha)

Jitetu (地鉄) ———- fine wood grained tone. Refer Jitetu, 4 |Names of Parts4

Nakago (中心)———- Nakago is a hilt area.  Sword makers inscribe his names here.  The shape of the Nakago during the Heian period is often Kijimomo shape(雉腿), that means pheasant thigh shape.

6 Kijimomo-nakago

Hi and engrave ———- Hi (樋) means an engraved straight line.  Hi and engraved design is rare in Heian period.  It became more common later time.

Kissaki (切先)———– Ko-kissaki (small kissaki). Boshi (Hamon around kissaki) is usually with komaru (小丸) means small round with a little return.6c Boshi Hamon

Names of the Heian period sword smiths

  • Yamashiro school——–  Sanjo Munechika(三条宗近) Sanjo Yoshiie(三条吉家)    Gojo Kanenaga(五条兼長) Gojo Kuninaga (五条国永)
  • Yamato school ——–Senju-in (千手院)
  • Bizen school ———– Bizen Tomonari(備前友成) Bizen Masatsune(備前正恒) Bizen Kanehira (備前包平)
  • Hoki (伯耆) ———–Yasutsuna (安綱) Sanemori (真守)
  • Buzen (豊前) ——— Cho-en (長円) Sinsoku (神息)
  • Satsuma (薩摩) ——-Naminohira (波平)