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Description

This is a Katana made by the swordsmith Kasama Ikkansai Shigetsugu in 1937, at the residence of Tōyama Mitsuru. The blade features a slightly wide shape with deep curvature and a clean Ko-itame hada. It comes with an NBTHK Tokubetsu Hozon Certificate, recognizing its quality and historical significance.

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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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 — 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
Measurements & details
Smith
Kasama Ikkansai Shigetsugu
Type
Katana
Period
Around 1912–1926(Taisho)
Signature
Signed
Measurements
Nagasa 68.4cmSori 1.7cmMotohaba 3.13cmSakihaba 2.14cmKasane 0.74cmWeight 730g
Description

This is a Katana made by the swordsmith Kasama Ikkansai Shigetsugu in 1937, at the residence of Tōyama Mitsuru. The blade features a slightly wide shape with deep curvature and a clean Ko-itame hada. It comes with an NBTHK Tokubetsu Hozon Certificate, recognizing its quality and historical significance.

About the maker

Shigetsugu

繁繼

Tokyo · around 1912-1926

Tōken Taikan top 63%

4 pieces on the market now

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

Historical context

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 →
Samurai Nippon
Hozon
Katana - Hozon - by Kasama Ikkansai Shigetsugu - Kasama Ikkansai ShigetsuguKatana - Hozon - by Kasama Ikkansai Shigetsugu - Kasama Ikkansai Shigetsugu

Katana

ByKasama Ikkansai Shigetsugu
¥980,000
Choshuya
Tokuho
Daisho - Tokuho - by Kasama Ikkansai Shigetsugu - Daisho Set: Signed Kasama Ikkansai Shigetsugu with HorimonoDaisho - Tokuho - by Kasama Ikkansai Shigetsugu - Daisho Set: Signed Kasama Ikkansai Shigetsugu with Horimono

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, February (Katana) and Showa 12th year, August (Wakizashi)Wakizashi - by Kasama Ikkansai Shigetsugu - Daisho: Signed Kasama Ikkan-sai Shigetsugu with carving, Showa 10th year, February (Katana) and Showa 12th year, August (Wakizashi)

Wakizashi

ByKasama Ikkansai Shigetsugu
¥3,000,000

Previously sold by Kasama Ikkansai Shigetsugu

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 - Hozon TokenKatana - Hozon - by Kasama Ikkansai Shigetsugu - Kasama-ikkansai Shigetsugu - Hozon Token
Sold

Katana

ByKasama Ikkansai Shigetsugu
SOLD
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
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 - Japanese Sword for Sale | Ginza Choshuya | Kasama Ikkan-sai Shigetsugu, carved by the same hand, auspicious day in August, Showa 12Katana - by Kasama Ikkansai Shigetsugu - Japanese Sword for Sale | Ginza Choshuya | Kasama Ikkan-sai Shigetsugu, carved by the same hand, auspicious day in August, Showa 12
Sold

Katana

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
Giheiya
Gendaitō
Katana - by Kasama Ikkansai Shigetsugu - Mumei (Kiritsuke-mei) Ikkansai Shigetsugu Carved in October Showa 8 - 70.3cm with KoshiraeKatana - by Kasama Ikkansai Shigetsugu - Mumei (Kiritsuke-mei) Ikkansai Shigetsugu Carved in October Showa 8 - 70.3cm with Koshirae
Sold

Katana

ByKasama Ikkansai Shigetsugu
SOLD
Samurai Museum
Gendaitō
Katana - by Kasama Ikkansai Shigetsugu - Antique Japanese Sword Katana Attributed to Kasama Shigetsugu NBTHK Kicho CertificateKatana - by Kasama Ikkansai Shigetsugu - Antique Japanese Sword Katana Attributed to Kasama Shigetsugu NBTHK Kicho Certificate
Sold

Katana

ByKasama Ikkansai Shigetsugu
SOLD

Swords

  • Katana
  • Wakizashi
  • Tantō
  • Tachi
  • Naginata
  • Yari

Fittings

  • Tsuba
  • Fuchi-Kashira
  • Kozuka
  • Menuki

Armor

  • Kabuto
  • 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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Description

This is a Katana made by the swordsmith Kasama Ikkansai Shigetsugu in 1937, at the residence of Tōyama Mitsuru. The blade features a slightly wide shape with deep curvature and a clean Ko-itame hada. It comes with an NBTHK Tokubetsu Hozon Certificate, recognizing its quality and historical significance.

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 — 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
Measurements & details
Smith
Kasama Ikkansai Shigetsugu
Type
Katana
Period
Around 1912–1926(Taisho)
Signature
Signed
Measurements
Nagasa 68.4cmSori 1.7cmMotohaba 3.13cmSakihaba 2.14cmKasane 0.74cmWeight 730g
Description

This is a Katana made by the swordsmith Kasama Ikkansai Shigetsugu in 1937, at the residence of Tōyama Mitsuru. The blade features a slightly wide shape with deep curvature and a clean Ko-itame hada. It comes with an NBTHK Tokubetsu Hozon Certificate, recognizing its quality and historical significance.

About the maker

Shigetsugu

繁繼

Tokyo · around 1912-1926

Tōken Taikan top 63%

4 pieces on the market now

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

Historical context

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 →
Samurai Nippon
Hozon
Katana - Hozon - by Kasama Ikkansai Shigetsugu - Kasama Ikkansai ShigetsuguKatana - Hozon - by Kasama Ikkansai Shigetsugu - Kasama Ikkansai Shigetsugu

Katana

ByKasama Ikkansai Shigetsugu
¥980,000
Choshuya
Tokuho
Daisho - Tokuho - by Kasama Ikkansai Shigetsugu - Daisho Set: Signed Kasama Ikkansai Shigetsugu with HorimonoDaisho - Tokuho - by Kasama Ikkansai Shigetsugu - Daisho Set: Signed Kasama Ikkansai Shigetsugu with Horimono

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, February (Katana) and Showa 12th year, August (Wakizashi)Wakizashi - by Kasama Ikkansai Shigetsugu - Daisho: Signed Kasama Ikkan-sai Shigetsugu with carving, Showa 10th year, February (Katana) and Showa 12th year, August (Wakizashi)

Wakizashi

ByKasama Ikkansai Shigetsugu
¥3,000,000

Previously sold by Kasama Ikkansai Shigetsugu

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 - Hozon TokenKatana - Hozon - by Kasama Ikkansai Shigetsugu - Kasama-ikkansai Shigetsugu - Hozon Token
Sold

Katana

ByKasama Ikkansai Shigetsugu
SOLD
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
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 - Japanese Sword for Sale | Ginza Choshuya | Kasama Ikkan-sai Shigetsugu, carved by the same hand, auspicious day in August, Showa 12Katana - by Kasama Ikkansai Shigetsugu - Japanese Sword for Sale | Ginza Choshuya | Kasama Ikkan-sai Shigetsugu, carved by the same hand, auspicious day in August, Showa 12
Sold

Katana

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
Giheiya
Gendaitō
Katana - by Kasama Ikkansai Shigetsugu - Mumei (Kiritsuke-mei) Ikkansai Shigetsugu Carved in October Showa 8 - 70.3cm with KoshiraeKatana - by Kasama Ikkansai Shigetsugu - Mumei (Kiritsuke-mei) Ikkansai Shigetsugu Carved in October Showa 8 - 70.3cm with Koshirae
Sold

Katana

ByKasama Ikkansai Shigetsugu
SOLD
Samurai Museum
Gendaitō
Katana - by Kasama Ikkansai Shigetsugu - Antique Japanese Sword Katana Attributed to Kasama Shigetsugu NBTHK Kicho CertificateKatana - by Kasama Ikkansai Shigetsugu - Antique Japanese Sword Katana Attributed to Kasama Shigetsugu NBTHK Kicho Certificate
Sold

Katana

ByKasama Ikkansai Shigetsugu
SOLD

Swords

  • Katana
  • Wakizashi
  • Tantō
  • Tachi
  • Naginata
  • Yari

Fittings

  • Tsuba
  • Fuchi-Kashira
  • Kozuka
  • Menuki

Armor

  • Kabuto
  • Samurai Armor

By Certification

  • Tokujū
  • Jūyō
  • Tokuho
  • Hozon

Resources

  • Dealer Directory
  • Artist Directory
  • The Daily Kantei
  • Glossary
  • Browse All
Nihontowatch© 2026
TermsPrivacyCookiesAbout
NihontoWatch Mon

NihontoWatch

Market
Encyclopedia
Kantei
NihontoWatch Mon

NihontoWatch

Market
Encyclopedia
Kantei