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Description

This is a tanto by Sakai Ikkansai Shigemasa, born in 1905 and active until 1996. The blade features a beautiful jigane from skillful forging and a prominent hamon. It comes with an NBTHK Hozon paper and is housed in a shirasaya with a gold-plated double habaki.

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Swords›Shigemasa›Tanto: Sakai Ikkansai Shigemasa
tantoHozon
Kasama Ikkansai Shigemasa

Tanto: Sakai Ikkansai Shigemasa

mei · Showa (1926-1989) · nagasa 26.1cm · sori 0.2cm

¥660,000
Visit seller website →
Kasama Ikkansai Shigemasa — 1 of 3
Kasama Ikkansai Shigemasa — 2 of 3
Kasama Ikkansai Shigemasa — 3 of 3
1 / 3
1 / 3
Kasama Ikkansai Shigemasa — 1 of 3Kasama Ikkansai Shigemasa — 2 of 3Kasama Ikkansai Shigemasa — 3 of 3
Measurements & details
Smith
Kasama Ikkansai Shigemasa
Type
Tanto
Period
Around 1926–1989(Showa)
Province
Saitama
Signature
Signed
Measurements
Nagasa 26.1cmSori 0.2cmMotohaba 2.6cmKasane 0.5cm
Description

This is a tanto by Sakai Ikkansai Shigemasa, born in 1905 and active until 1996. The blade features a beautiful jigane from skillful forging and a prominent hamon. It comes with an NBTHK Hozon paper and is housed in a shirasaya with a gold-plated double habaki.

About the maker

Shigemasa

繁政

around 1926-1989

4 pieces on the market now

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

Historical context

The twentieth century nearly killed the craft twice: wartime distortion, then the occupation ban. The NBTHK’s founding in 1948 and licensed forging from 1953 rebuilt the sword as an art, crowned by Living National Treasures and the mukansa rank.

Shōwa to the present: destruction and revival →

NBTHK Certificate
Hozon Tōken保存刀剣
Sword Worthy of Preservation
›

Certifies a genuine blade worth preserving: a signature confirmed correct, or, if unsigned, an era, province, and school that the NBTHK can reliably identify.

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
K
Katanahanbai
🇯🇵Ships from Japan
›
✓Verified dealerkatanahanbai.com
Settles in JPY
✓Ships worldwide✓English supportWire transferPayPalCredit card
Return policy

For cooling-off, contact us within 3 days including the day you received the item, and ship it so that it arrives within 8 days. After 8 days a return cannot be accepted. Returning an item after 8 days will be treated as a buy-back.

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

More works by Kasama Ikkansai Shigemasa

View all →
Ayakashi
Gendaitō
Daisho - by Kasama Ikkansai Shigemasa - Daisho: Sakai Ikkanzai ShigemasaDaisho - by Kasama Ikkansai Shigemasa - Daisho: Sakai Ikkanzai Shigemasa

Daishō

ByKasama Ikkansai Shigemasa
¥150,000
Aoi Art
Hozon
Katana - Hozon - by Kasama Ikkansai Shigemasa - Sakai Ikkansai ShigemasaKatana - Hozon - by Kasama Ikkansai Shigemasa - Sakai Ikkansai Shigemasa

Katana

ByKasama Ikkansai Shigemasa
¥950,000

Previously sold by Kasama Ikkansai Shigemasa

Choshuya
Gendaitō
Tanto - by Kasama Ikkansai Shigemasa - Sakai Ikkan-Sai ShigemasaTanto - by Kasama Ikkansai Shigemasa - Sakai Ikkan-Sai Shigemasa
Sold

Tantō

ByKasama Ikkansai Shigemasa
SOLD
Choshuya
Gendaitō
Tanto - by Kasama Ikkansai Shigemasa - Japanese Sword for Sale | Ginza Choshuya | Signed Sakai Ikkan-sai Shigemasa with carving (kaō) - Auspicious day in midsummer, 1984Tanto - by Kasama Ikkansai Shigemasa - Japanese Sword for Sale | Ginza Choshuya | Signed Sakai Ikkan-sai Shigemasa with carving (kaō) - Auspicious day in midsummer, 1984
Sold

Tantō

ByKasama Ikkansai Shigemasa
SOLD
World Seiyudo
Hozon
Katana - Hozon - by Kasama Ikkansai Shigemasa - Ikkansai Sigemasa - Mukansa, NBTHK Hozon TokenKatana - Hozon - by Kasama Ikkansai Shigemasa - Ikkansai Sigemasa - Mukansa, NBTHK Hozon Token
Sold

Katana

ByKasama Ikkansai Shigemasa
SOLD
Aoi Art
Tokuho
Wakizashi - Tokuho - by Kasama Ikkansai Shigemasa - Sakai Ikkan-Sai ShigemasaWakizashi - Tokuho - by Kasama Ikkansai Shigemasa - Sakai Ikkan-Sai Shigemasa
Sold

Wakizashi

ByKasama Ikkansai Shigemasa
SOLD
World Seiyudo
Tokuho
Katana - Tokuho - by Kasama Ikkansai Shigemasa - Sakai Ikkansai Sigemasa - Tokubetsu Hozon TokenKatana - Tokuho - by Kasama Ikkansai Shigemasa - Sakai Ikkansai Sigemasa - Tokubetsu Hozon Token
Sold

Katana

ByKasama Ikkansai Shigemasa
SOLD
World Seiyudo
Gendaitō
Tanto - by Kasama Ikkansai Shigemasa - Sakai Ikkansai Shigemasa - MukansaTanto - by Kasama Ikkansai Shigemasa - Sakai Ikkansai Shigemasa - Mukansa
Sold

Tantō

ByKasama Ikkansai Shigemasa
SOLD
Kusanagi
Hozon
Katana - Hozon - by Kasama Ikkansai Shigemasa - 無鑑査注文打ち一文字写し『尽忠報国一貫斎繁正』『昭和十八年六月日』保存刀剣Katana - Hozon - by Kasama Ikkansai Shigemasa - 無鑑査注文打ち一文字写し『尽忠報国一貫斎繁正』『昭和十八年六月日』保存刀剣
Sold

Katana

ByKasama Ikkansai Shigemasa
SOLD
Samurai Museum
Hozon
Tanto - Hozon - by Kasama Ikkansai Shigemasa - Modern Japanese Sword Gendaito Tanto Signed by Shigemasa NBTHK Hozon CertificateTanto - Hozon - by Kasama Ikkansai Shigemasa - Modern Japanese Sword Gendaito Tanto Signed by Shigemasa NBTHK Hozon Certificate
Sold

Tantō

ByKasama Ikkansai Shigemasa
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

Description

This is a tanto by Sakai Ikkansai Shigemasa, born in 1905 and active until 1996. The blade features a beautiful jigane from skillful forging and a prominent hamon. It comes with an NBTHK Hozon paper and is housed in a shirasaya with a gold-plated double habaki.

NihontoWatch MonNihontoWatch
MarketEncyclopediaKantei
Swords›Shigemasa›Tanto: Sakai Ikkansai Shigemasa
tantoHozon
Kasama Ikkansai Shigemasa

Tanto: Sakai Ikkansai Shigemasa

mei · Showa (1926-1989) · nagasa 26.1cm · sori 0.2cm

¥660,000
Visit seller website →
Kasama Ikkansai Shigemasa — 1 of 3
Kasama Ikkansai Shigemasa — 2 of 3
Kasama Ikkansai Shigemasa — 3 of 3
1 / 3
1 / 3
Kasama Ikkansai Shigemasa — 1 of 3Kasama Ikkansai Shigemasa — 2 of 3Kasama Ikkansai Shigemasa — 3 of 3
Measurements & details
Smith
Kasama Ikkansai Shigemasa
Type
Tanto
Period
Around 1926–1989(Showa)
Province
Saitama
Signature
Signed
Measurements
Nagasa 26.1cmSori 0.2cmMotohaba 2.6cmKasane 0.5cm
Description

This is a tanto by Sakai Ikkansai Shigemasa, born in 1905 and active until 1996. The blade features a beautiful jigane from skillful forging and a prominent hamon. It comes with an NBTHK Hozon paper and is housed in a shirasaya with a gold-plated double habaki.

About the maker

Shigemasa

繁政

around 1926-1989

4 pieces on the market now

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

Historical context

The twentieth century nearly killed the craft twice: wartime distortion, then the occupation ban. The NBTHK’s founding in 1948 and licensed forging from 1953 rebuilt the sword as an art, crowned by Living National Treasures and the mukansa rank.

Shōwa to the present: destruction and revival →

NBTHK Certificate
Hozon Tōken保存刀剣
Sword Worthy of Preservation
›

Certifies a genuine blade worth preserving: a signature confirmed correct, or, if unsigned, an era, province, and school that the NBTHK can reliably identify.

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
K
Katanahanbai
🇯🇵Ships from Japan
›
✓Verified dealerkatanahanbai.com
Settles in JPY
✓Ships worldwide✓English supportWire transferPayPalCredit card
Return policy

For cooling-off, contact us within 3 days including the day you received the item, and ship it so that it arrives within 8 days. After 8 days a return cannot be accepted. Returning an item after 8 days will be treated as a buy-back.

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

More works by Kasama Ikkansai Shigemasa

View all →
Ayakashi
Gendaitō
Daisho - by Kasama Ikkansai Shigemasa - Daisho: Sakai Ikkanzai ShigemasaDaisho - by Kasama Ikkansai Shigemasa - Daisho: Sakai Ikkanzai Shigemasa

Daishō

ByKasama Ikkansai Shigemasa
¥150,000
Aoi Art
Hozon
Katana - Hozon - by Kasama Ikkansai Shigemasa - Sakai Ikkansai ShigemasaKatana - Hozon - by Kasama Ikkansai Shigemasa - Sakai Ikkansai Shigemasa

Katana

ByKasama Ikkansai Shigemasa
¥950,000

Previously sold by Kasama Ikkansai Shigemasa

Choshuya
Gendaitō
Tanto - by Kasama Ikkansai Shigemasa - Sakai Ikkan-Sai ShigemasaTanto - by Kasama Ikkansai Shigemasa - Sakai Ikkan-Sai Shigemasa
Sold

Tantō

ByKasama Ikkansai Shigemasa
SOLD
Choshuya
Gendaitō
Tanto - by Kasama Ikkansai Shigemasa - Japanese Sword for Sale | Ginza Choshuya | Signed Sakai Ikkan-sai Shigemasa with carving (kaō) - Auspicious day in midsummer, 1984Tanto - by Kasama Ikkansai Shigemasa - Japanese Sword for Sale | Ginza Choshuya | Signed Sakai Ikkan-sai Shigemasa with carving (kaō) - Auspicious day in midsummer, 1984
Sold

Tantō

ByKasama Ikkansai Shigemasa
SOLD
World Seiyudo
Hozon
Katana - Hozon - by Kasama Ikkansai Shigemasa - Ikkansai Sigemasa - Mukansa, NBTHK Hozon TokenKatana - Hozon - by Kasama Ikkansai Shigemasa - Ikkansai Sigemasa - Mukansa, NBTHK Hozon Token
Sold

Katana

ByKasama Ikkansai Shigemasa
SOLD
Aoi Art
Tokuho
Wakizashi - Tokuho - by Kasama Ikkansai Shigemasa - Sakai Ikkan-Sai ShigemasaWakizashi - Tokuho - by Kasama Ikkansai Shigemasa - Sakai Ikkan-Sai Shigemasa
Sold

Wakizashi

ByKasama Ikkansai Shigemasa
SOLD
World Seiyudo
Tokuho
Katana - Tokuho - by Kasama Ikkansai Shigemasa - Sakai Ikkansai Sigemasa - Tokubetsu Hozon TokenKatana - Tokuho - by Kasama Ikkansai Shigemasa - Sakai Ikkansai Sigemasa - Tokubetsu Hozon Token
Sold

Katana

ByKasama Ikkansai Shigemasa
SOLD
World Seiyudo
Gendaitō
Tanto - by Kasama Ikkansai Shigemasa - Sakai Ikkansai Shigemasa - MukansaTanto - by Kasama Ikkansai Shigemasa - Sakai Ikkansai Shigemasa - Mukansa
Sold

Tantō

ByKasama Ikkansai Shigemasa
SOLD
Kusanagi
Hozon
Katana - Hozon - by Kasama Ikkansai Shigemasa - 無鑑査注文打ち一文字写し『尽忠報国一貫斎繁正』『昭和十八年六月日』保存刀剣Katana - Hozon - by Kasama Ikkansai Shigemasa - 無鑑査注文打ち一文字写し『尽忠報国一貫斎繁正』『昭和十八年六月日』保存刀剣
Sold

Katana

ByKasama Ikkansai Shigemasa
SOLD
Samurai Museum
Hozon
Tanto - Hozon - by Kasama Ikkansai Shigemasa - Modern Japanese Sword Gendaito Tanto Signed by Shigemasa NBTHK Hozon CertificateTanto - Hozon - by Kasama Ikkansai Shigemasa - Modern Japanese Sword Gendaito Tanto Signed by Shigemasa NBTHK Hozon Certificate
Sold

Tantō

ByKasama Ikkansai Shigemasa
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

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Market
Encyclopedia
Kantei