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Description

This is a kogai (hairpin/utility knife handle) from the Edo period, attributed to Shonai. It features a suaka (plain copper) ground with a textured ishime-ji (stone-grain) finish, adorned with a high-relief carving of flower paulownia (hanagiri) and inlaid with colored metals. The piece comes with a Hozon Tosogu certificate.

NihontoWatch MonNihontoWatch
MarketEncyclopediaKantei
Fittings›Kōgai›Kogai: Mumei (Shonai) (Hozon Tosogu)
kogaiHozon

Kogai: Mumei (Shonai) (Hozon Tosogu)

mumei · Edo

SOLD
KogaiHozon
Could you name the smith from the blade alone? Today’s kantei →
Kogai: Mumei (Shonai) (Hozon Tosogu) — 1 of 2
Kogai: Mumei (Shonai) (Hozon Tosogu) — 2 of 2
1 / 2
1 / 2
Kogai: Mumei (Shonai) (Hozon Tosogu) — 1 of 2Kogai: Mumei (Shonai) (Hozon Tosogu) — 2 of 2
KogaiHozon
Could you name the smith from the blade alone? Today’s kantei →
Measurements & details
Era

Edo

Signature

Unsigned

Papers

Hozon

Description

This is a kogai (hairpin/utility knife handle) from the Edo period, attributed to Shonai. It features a suaka (plain copper) ground with a textured ishime-ji (stone-grain) finish, adorned with a high-relief carving of flower paulownia (hanagiri) and inlaid with colored metals. The piece comes with a Hozon Tosogu certificate.

NBTHK Certificate
Hozon Tōsōgu保存刀装具
Fitting Worthy of Preservation
›

Certifies a genuine fitting worth preserving: a correct signature, or, if unsigned, an identifiable era and school, with recognized artistic and craft value.

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
✓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→

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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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Sold

Description

This is a kogai (hairpin/utility knife handle) from the Edo period, attributed to Shonai. It features a suaka (plain copper) ground with a textured ishime-ji (stone-grain) finish, adorned with a high-relief carving of flower paulownia (hanagiri) and inlaid with colored metals. The piece comes with a Hozon Tosogu certificate.

NihontoWatch MonNihontoWatch
MarketEncyclopediaKantei
Fittings›Kōgai›Kogai: Mumei (Shonai) (Hozon Tosogu)
kogaiHozon

Kogai: Mumei (Shonai) (Hozon Tosogu)

mumei · Edo

SOLD
KogaiHozon
Could you name the smith from the blade alone? Today’s kantei →
Kogai: Mumei (Shonai) (Hozon Tosogu) — 1 of 2
Kogai: Mumei (Shonai) (Hozon Tosogu) — 2 of 2
1 / 2
1 / 2
Kogai: Mumei (Shonai) (Hozon Tosogu) — 1 of 2Kogai: Mumei (Shonai) (Hozon Tosogu) — 2 of 2
KogaiHozon
Could you name the smith from the blade alone? Today’s kantei →
Measurements & details
Era

Edo

Signature

Unsigned

Papers

Hozon

Description

This is a kogai (hairpin/utility knife handle) from the Edo period, attributed to Shonai. It features a suaka (plain copper) ground with a textured ishime-ji (stone-grain) finish, adorned with a high-relief carving of flower paulownia (hanagiri) and inlaid with colored metals. The piece comes with a Hozon Tosogu certificate.

NBTHK Certificate
Hozon Tōsōgu保存刀装具
Fitting Worthy of Preservation
›

Certifies a genuine fitting worth preserving: a correct signature, or, if unsigned, an identifiable era and school, with recognized artistic and craft value.

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
✓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→

Similar Kōgai

Katana Yamadaiya
Tokuho
Kogai - Tokuho - by Goto School - Kogai: Firewood Stacking and Moored Boat Design - Mumei, Goto KenjoKogai - Tokuho - by Goto School - Kogai: Firewood Stacking and Moored Boat Design - Mumei, Goto Kenjo

Kōgai

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Kōgai

ByMuromachi Period School
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Kōgai

ByKo-Goto School
¥1,450,000
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Kogai - Tokuho - Kogai: Bamboo Design, Mumei (Unno School)Kogai - Tokuho - Kogai: Bamboo Design, Mumei (Unno School)

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ByUnno
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Kōgai

ByGoto Joshin
¥650,000

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
TermsPrivacyCookiesAbout
Sold
NihontoWatch MonNihontoWatch
Market
Encyclopedia
Kantei
NihontoWatch MonNihontoWatch
Market
Encyclopedia
Kantei