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Description

This Katana, made by Shigetsugu in 1937, is certified as NBTHK Tokubetsu Hozon Token. The blade features a slightly wide shape with deep curvature and a clean ko-itame hada. Shigetsugu, whose real name was Kasama Yoshikazu, was a renowned swordsmith who forged swords at Tōyama Mitsuru's residence and was instrumental in reviving traditional Japanese sword-forging techniques.

Certificate Reading

Certificate reading — 銘 繁継作(刻印・トキワ) 於頭山満翁邸内 昭和十二年十二月日

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Swords›Shigetsugu›Katana: Made by Shigetsugu at the residence of Mr. Tōyama Mitsuru (1937) (NBTHK Tokubetsu Hozon Token)
katanaTokubetsu Hozon
Kasama Ikkansai Shigetsugu

Katana: Made by Shigetsugu at the residence of Mr. Tōyama Mitsuru (1937) (NBTHK Tokubetsu Hozon Token)

mei · Taisho (1912-1926) · nagasa 68.4cm · sori 1.7cm

¥700,000
Visit seller website →
Kasama Ikkansai Shigetsugu (繁繼) · Taisho (1912-1926)7 works for sale · median ask ¥1,090,000 →
Katana
Could you name the smith from the blade alone? Today’s kantei →
Kasama Ikkansai Shigetsugu — 1 of 5
Kasama Ikkansai Shigetsugu — 2 of 5
Kasama Ikkansai Shigetsugu — 3 of 5
Kasama Ikkansai Shigetsugu — 4 of 5
Kasama Ikkansai Shigetsugu — 5 of 5
1 / 5
1 / 5
Kasama Ikkansai Shigetsugu — 1 of 5Kasama Ikkansai Shigetsugu — 2 of 5Kasama Ikkansai Shigetsugu — 3 of 5Kasama Ikkansai Shigetsugu — 4 of 5Kasama Ikkansai Shigetsugu — 5 of 5
Kasama Ikkansai Shigetsugu (繁繼) · Taisho (1912-1926)7 works for sale · median ask ¥1,090,000 →
Katana
Could you name the smith from the blade alone? Today’s kantei →
Measurements & details
Smith
Kasama Ikkansai Shigetsugu
Type
Katana
Period
Around 1912–1926(Taisho)
Province
Shizuoka
Signature
Signed
Measurements
Nagasa 68.4cmSori 1.7cmMotohaba 3.13cmSakihaba 2.14cmKasane 0.74cmWeight 730g
Description

This Katana, made by Shigetsugu in 1937, is certified as NBTHK Tokubetsu Hozon Token. The blade features a slightly wide shape with deep curvature and a clean ko-itame hada. Shigetsugu, whose real name was Kasama Yoshikazu, was a renowned swordsmith who forged swords at Tōyama Mitsuru's residence and was instrumental in reviving traditional Japanese sword-forging techniques.

About the maker

Shigetsugu

繁繼

Tokyo · around 1912-1926

Tōken Taikan top 63%

7 pieces on the market now

›
7 works by Shigetsugu on the market→
Shigetsugu — full profile

Study this maker →

Historical context

The modern era (1868 to today)

›

The craft survived the Meiji ban and the occupation’s near-extinction, and rebuilt itself deliberately: licensed forging from 1953, traditional methods required by law, Living National Treasures, and the mukansa rank above judgment.

The modern era (1868 to today) →

NBTHK Certificate
Tokubetsu Hozon Tōken特別保存刀剣
Sword Especially Worthy of Preservation
›

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.

Signed: 繁継作(刻印・トキワ) 於頭山満翁邸内 昭和十二年十二月日 (Kasama Ikkansai Shigetsugu)
As written on the certificate
About the NBTHK›

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 site→
Seller
A
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Return policy

If you wish to return an item, please notify us within 3 days of receipt. After this period we cannot accept cancellations. Please ship the return to us within 5 business days. Cancellation is conditional on the item being kept in the same condition as at the time of sale, so please handle it with care.

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Daishō

ByKasama Ikkansai Shigetsugu
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Wakizashi - by Kasama Ikkansai Shigetsugu - Daisho: Signed Kasama Ikkan-sai Shigetsugu with carving, Showa 10th year 2nd month auspicious day (Katana) & Showa 12th year 8th month auspicious day (Wakizashi)Wakizashi - by Kasama Ikkansai Shigetsugu - Daisho: Signed Kasama Ikkan-sai Shigetsugu with carving, Showa 10th year 2nd month auspicious day (Katana) & Showa 12th year 8th month auspicious day (Wakizashi)

Wakizashi

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¥3,000,000
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by Kasama Ikkansai Shigetsugu - Daisho: Kasama Ikkansai Shigetsugu with carving, Showa 10 (katana) and Showa 12 (wakizashi)by Kasama Ikkansai Shigetsugu - Daisho: Kasama Ikkansai Shigetsugu with carving, Showa 10 (katana) and Showa 12 (wakizashi)
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Nihontowatch© 2026
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¥700,000

View on Aoi Art

Description

This Katana, made by Shigetsugu in 1937, is certified as NBTHK Tokubetsu Hozon Token. The blade features a slightly wide shape with deep curvature and a clean ko-itame hada. Shigetsugu, whose real name was Kasama Yoshikazu, was a renowned swordsmith who forged swords at Tōyama Mitsuru's residence and was instrumental in reviving traditional Japanese sword-forging techniques.

Certificate Reading

Certificate reading — 銘 繁継作(刻印・トキワ) 於頭山満翁邸内 昭和十二年十二月日

NihontoWatch MonNihontoWatch
MarketEncyclopediaKantei
Swords›Shigetsugu›Katana: Made by Shigetsugu at the residence of Mr. Tōyama Mitsuru (1937) (NBTHK Tokubetsu Hozon Token)
katanaTokubetsu Hozon
Kasama Ikkansai Shigetsugu

Katana: Made by Shigetsugu at the residence of Mr. Tōyama Mitsuru (1937) (NBTHK Tokubetsu Hozon Token)

mei · Taisho (1912-1926) · nagasa 68.4cm · sori 1.7cm

¥700,000
Visit seller website →
Kasama Ikkansai Shigetsugu (繁繼) · Taisho (1912-1926)7 works for sale · median ask ¥1,090,000 →
Katana
Could you name the smith from the blade alone? Today’s kantei →
Kasama Ikkansai Shigetsugu — 1 of 5
Kasama Ikkansai Shigetsugu — 2 of 5
Kasama Ikkansai Shigetsugu — 3 of 5
Kasama Ikkansai Shigetsugu — 4 of 5
Kasama Ikkansai Shigetsugu — 5 of 5
1 / 5
1 / 5
Kasama Ikkansai Shigetsugu — 1 of 5Kasama Ikkansai Shigetsugu — 2 of 5Kasama Ikkansai Shigetsugu — 3 of 5Kasama Ikkansai Shigetsugu — 4 of 5Kasama Ikkansai Shigetsugu — 5 of 5
Kasama Ikkansai Shigetsugu (繁繼) · Taisho (1912-1926)7 works for sale · median ask ¥1,090,000 →
Katana
Could you name the smith from the blade alone? Today’s kantei →
Measurements & details
Smith
Kasama Ikkansai Shigetsugu
Type
Katana
Period
Around 1912–1926(Taisho)
Province
Shizuoka
Signature
Signed
Measurements
Nagasa 68.4cmSori 1.7cmMotohaba 3.13cmSakihaba 2.14cmKasane 0.74cmWeight 730g
Description

This Katana, made by Shigetsugu in 1937, is certified as NBTHK Tokubetsu Hozon Token. The blade features a slightly wide shape with deep curvature and a clean ko-itame hada. Shigetsugu, whose real name was Kasama Yoshikazu, was a renowned swordsmith who forged swords at Tōyama Mitsuru's residence and was instrumental in reviving traditional Japanese sword-forging techniques.

About the maker

Shigetsugu

繁繼

Tokyo · around 1912-1926

Tōken Taikan top 63%

7 pieces on the market now

›
7 works by Shigetsugu on the market→
Shigetsugu — full profile

Study this maker →

Historical context

The modern era (1868 to today)

›

The craft survived the Meiji ban and the occupation’s near-extinction, and rebuilt itself deliberately: licensed forging from 1953, traditional methods required by law, Living National Treasures, and the mukansa rank above judgment.

The modern era (1868 to today) →

NBTHK Certificate
Tokubetsu Hozon Tōken特別保存刀剣
Sword Especially Worthy of Preservation
›

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.

Signed: 繁継作(刻印・トキワ) 於頭山満翁邸内 昭和十二年十二月日 (Kasama Ikkansai Shigetsugu)
As written on the certificate
About the NBTHK›

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 site→
Seller
A
Aoi Art
🇯🇵Ships from Japan
›
✓Verified dealeraoijapan.com
Settles in JPY
✓Ships worldwide✓English supportWire transferPayPalCredit card
Return policy

If you wish to return an item, please notify us within 3 days of receipt. After this period we cannot accept cancellations. Please ship the return to us within 5 business days. Cancellation is conditional on the item being kept in the same condition as at the time of sale, so please handle it with care.

View all of Aoi Art’s listings→View this item on the dealer’s site→

More works by Kasama Ikkansai Shigetsugu

View all →
Aoi Art
Tokuho
Katana - Tokuho - by Kasama Ikkansai Shigetsugu - Forged at the residence of Toyama Mitsuru by Kasama Ikkansai Shigetsugu June, Showa 12 (1937) Made upon the request of Hirooka KenjiKatana - Tokuho - by Kasama Ikkansai Shigetsugu - Forged at the residence of Toyama Mitsuru by Kasama Ikkansai Shigetsugu June, Showa 12 (1937) Made upon the request of Hirooka Kenji

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¥1,200,000
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Tanto - Hozon - by Kasama Ikkansai Shigetsugu - Signed Kasama Shigetsugu, made from leftover steel of the Meiji Jingu offering sword, on a lucky day in February, Taisho 6, for Yamakoshi TomisaburoTanto - Hozon - by Kasama Ikkansai Shigetsugu - Signed Kasama Shigetsugu, made from leftover steel of the Meiji Jingu offering sword, on a lucky day in February, Taisho 6, for Yamakoshi Tomisaburo

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¥980,000
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Daishō

ByKasama Ikkansai Shigetsugu
¥3,000,000
Choshuya
Gendaitō
Wakizashi - by Kasama Ikkansai Shigetsugu - Daisho: Signed Kasama Ikkan-sai Shigetsugu with carving, Showa 10th year 2nd month auspicious day (Katana) & Showa 12th year 8th month auspicious day (Wakizashi)Wakizashi - by Kasama Ikkansai Shigetsugu - Daisho: Signed Kasama Ikkan-sai Shigetsugu with carving, Showa 10th year 2nd month auspicious day (Katana) & Showa 12th year 8th month auspicious day (Wakizashi)

Wakizashi

ByKasama Ikkansai Shigetsugu
¥3,000,000
Choshuya
Gendaitō
Katana - by Kasama Ikkansai Shigetsugu - Kasama ShigetsuguKatana - by Kasama Ikkansai Shigetsugu - Kasama Shigetsugu

Katana

ByKasama Ikkansai Shigetsugu
Ask

Previously sold by Kasama Ikkansai Shigetsugu

View all →
Katanahanbai
Tokuho
Wakizashi - Tokuho - by Kasama Ikkansai Shigetsugu - Kasama Ikkansai Shigetsugu with CarvingsWakizashi - Tokuho - by Kasama Ikkansai Shigetsugu - Kasama Ikkansai Shigetsugu with Carvings
Sold

Wakizashi

ByKasama Ikkansai Shigetsugu
SOLD
Choshuya
by Kasama Ikkansai Shigetsugu - Daisho: Kasama Ikkansai Shigetsugu with carving, Showa 10 (katana) and Showa 12 (wakizashi)by Kasama Ikkansai Shigetsugu - Daisho: Kasama Ikkansai Shigetsugu with carving, Showa 10 (katana) and Showa 12 (wakizashi)
Sold

Daisho: Kasama Ikkansai Shigetsugu with carving, Showa 10 (katana) and Showa 12 (wakizashi)

ByKasama Ikkansai Shigetsugu
SOLD
Aoi Art
Tokuho
Katana - Tokuho - by Kasama Ikkansai Shigetsugu - Hachiman Daibosatsu Ikkansai Shigetsugu SakuKatana - Tokuho - by Kasama Ikkansai Shigetsugu - Hachiman Daibosatsu Ikkansai Shigetsugu Saku
Sold

Katana

ByKasama Ikkansai Shigetsugu
SOLD
World Seiyudo
Hozon
Katana - Hozon - by Kasama Ikkansai Shigetsugu - Kasama-ikkansai Shigetsugu - NBTHK Hozon TokenKatana - Hozon - by Kasama Ikkansai Shigetsugu - Kasama-ikkansai Shigetsugu - NBTHK Hozon Token
Sold

Katana

ByKasama Ikkansai Shigetsugu
SOLD
Tozando
Tokuho
Daisho - Tokuho - by Kasama Ikkansai Shigetsugu - Katana Wakizashi Daisho Set: Shigetsugu - NBTHK Tokubetsu Hozon Certificate, Shirasaya, Koshirae, Ubu Nakago, Gendai Era, ShizuokaDaisho - Tokuho - by Kasama Ikkansai Shigetsugu - Katana Wakizashi Daisho Set: Shigetsugu - NBTHK Tokubetsu Hozon Certificate, Shirasaya, Koshirae, Ubu Nakago, Gendai Era, Shizuoka
Sold

Daishō

ByKasama Ikkansai Shigetsugu
SOLD
Choshuya
Gendaitō
Katana - by Kasama Ikkansai Shigetsugu - Kasama Ikkan-Sai ShigetsuguKatana - by Kasama Ikkansai Shigetsugu - Kasama Ikkan-Sai Shigetsugu
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Katana

ByKasama Ikkansai Shigetsugu
SOLD
Nipponto
Katana - by Kasama Ikkansai Shigetsugu - Japanese Sword, Mumei (Unsigned) Kasama Shigetsugu with Kicho Touken CertificateKatana - by Kasama Ikkansai Shigetsugu - Japanese Sword, Mumei (Unsigned) Kasama Shigetsugu with Kicho Touken Certificate
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ByKasama Ikkansai Shigetsugu
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Gendaitō
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Sold

Katana

ByKasama Ikkansai Shigetsugu
SOLD

Swords

  • Katana
  • Wakizashi
  • Tantō
  • Tachi
  • Naginata
  • Yari
  • Japanese Swords
  • Samurai Swords

Fittings

  • Tsuba
  • Fuchi-Kashira
  • Kozuka
  • Menuki
  • Sword Guards (Tsuba)

Armor

  • Kabuto
  • Samurai Armor
  • All Samurai Armor

By Certification

  • Tokujū
  • Jūyō
  • Tokuho
  • Hozon

Resources

  • Dealer Directory
  • Artist Directory
  • The Daily Kantei
  • Glossary
  • Browse All
Nihontowatch© 2026
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¥700,000

View on Aoi Art
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Encyclopedia
Kantei
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