NihontoWatch Mon

NihontoWatch

Market
Encyclopedia
Kantei
NihontoWatch Mon

NihontoWatch

Market
Encyclopedia
Kantei

Description

This is a tanto by Ryujin Taro Sadashige, whose real name is Adachi Shigefumi. Born in Showa 33 (1958), he studied under his father and later under Living National Treasure Gassan Sadakazu. This particular piece was exhibited at the 9th Omamori Katana Exhibition and features high-level koshirae crafted by modern artisans.

NihontoWatch MonNihontoWatch
MarketEncyclopediaKantei
Swords›Sadashige›Tanto: Ryujin Taro Sadashige (Kao) - August Heisei 25 (Exhibited at the 9th Omamori Katana Exhibition)
tantoHozon
Sadashige

Tanto: Ryujin Taro Sadashige (Kao) - August Heisei 25 (Exhibited at the 9th Omamori Katana Exhibition)

mei · Gendaito · nagasa 24.4cm

¥750,000
Visit seller website →
Sadashige — 1 of 7
Sadashige — 2 of 7
Sadashige — 3 of 7
Sadashige — 4 of 7
Sadashige — 5 of 7
Sadashige — 6 of 7
Sadashige — 7 of 7
1 / 7
1 / 7
Sadashige — 1 of 7Sadashige — 2 of 7Sadashige — 3 of 7Sadashige — 4 of 7Sadashige — 5 of 7Sadashige — 6 of 7Sadashige — 7 of 7
Measurements & details
Smith
Sadashige
Type
Tanto
Period
Around 1989–2019(Heisei)
Province
Wakayama
Signature
Signed
Measurements
Nagasa 24.4cmMotohaba 2.5cmKasane 0.7cm
Description

This is a tanto by Ryujin Taro Sadashige, whose real name is Adachi Shigefumi. Born in Showa 33 (1958), he studied under his father and later under Living National Treasure Gassan Sadakazu. This particular piece was exhibited at the 9th Omamori Katana Exhibition and features high-level koshirae crafted by modern artisans.

About the maker

Sadashige

貞茂

Kii · around 1989-2019

3 pieces on the market now

›
3 works by Sadashige on the market→
Sadashige — 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
S
Samurai Shokai
🇯🇵Ships from Japan
›
✓Verified dealersamuraishokai.jp
Settles in JPY
·Domestic shipping onlyWire transferCredit card
Return policy

Returns possible within 3 days of arrival. Customer pays return shipping and bank transfer fees. Excluded: condition differs from sale, 3+ days passed, overseas delivery, in-store purchases, and deposit transactions.

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

More works by Sadashige

View all →
Touken Komachi
Gendaitō
Katana - by Sadashige - Adachi Sadashige with KoshiraeKatana - by Sadashige - Adachi Sadashige with Koshirae

Katana

BySadashige
¥550,000
E-sword
Gendaitō
Tanto - by Sadashige - Ryujin-ju Minamoto Sadashige saku (Ryujintaro Minamoto Sadashige) - March, Heisei 2Tanto - by Sadashige - Ryujin-ju Minamoto Sadashige saku (Ryujintaro Minamoto Sadashige) - March, Heisei 2

Tantō

BySadashige
¥250,000

Previously sold by Sadashige

Giheiya
Gendaitō
Tanto - by Sadashige - Gendaito Tanto: Ryujin Taro Minamoto Sadashige with ShirasayaTanto - by Sadashige - Gendaito Tanto: Ryujin Taro Minamoto Sadashige with Shirasaya
Sold

Tantō

BySadashige
SOLD
Giheiya
Gendaitō
Katana - by Sadashige - Ryujin Taro Minamoto Sadashige with KoshiraeKatana - by Sadashige - Ryujin Taro Minamoto Sadashige with Koshirae
Sold

Katana

BySadashige
SOLD
Giheiya
Tanto - by Sadashige - Ryujin Taro Minamoto SadashigeTanto - by Sadashige - Ryujin Taro Minamoto Sadashige
Sold

Tantō

BySadashige
SOLD
Samurai Museum
Gendaitō
Tanto - by Sadashige - Modern Authentic Japanese Sword Gendaito Shirasaya Tanto signed by Minamoto SadashigeTanto - by Sadashige - Modern Authentic Japanese Sword Gendaito Shirasaya Tanto signed by Minamoto Sadashige
Sold

Tantō

BySadashige
SOLD
Giheiya
Gendaitō
Tanto - by Sadashige - Minamoto Sadashige (Ryujin Taro Minamoto Sadashige) - 7 Sun 9 Bu, with ShirasayaTanto - by Sadashige - Minamoto Sadashige (Ryujin Taro Minamoto Sadashige) - 7 Sun 9 Bu, with Shirasaya
Sold

Tantō

BySadashige
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 Ryujin Taro Sadashige, whose real name is Adachi Shigefumi. Born in Showa 33 (1958), he studied under his father and later under Living National Treasure Gassan Sadakazu. This particular piece was exhibited at the 9th Omamori Katana Exhibition and features high-level koshirae crafted by modern artisans.

NihontoWatch MonNihontoWatch
MarketEncyclopediaKantei
Swords›Sadashige›Tanto: Ryujin Taro Sadashige (Kao) - August Heisei 25 (Exhibited at the 9th Omamori Katana Exhibition)
tantoHozon
Sadashige

Tanto: Ryujin Taro Sadashige (Kao) - August Heisei 25 (Exhibited at the 9th Omamori Katana Exhibition)

mei · Gendaito · nagasa 24.4cm

¥750,000
Visit seller website →
Sadashige — 1 of 7
Sadashige — 2 of 7
Sadashige — 3 of 7
Sadashige — 4 of 7
Sadashige — 5 of 7
Sadashige — 6 of 7
Sadashige — 7 of 7
1 / 7
1 / 7
Sadashige — 1 of 7Sadashige — 2 of 7Sadashige — 3 of 7Sadashige — 4 of 7Sadashige — 5 of 7Sadashige — 6 of 7Sadashige — 7 of 7
Measurements & details
Smith
Sadashige
Type
Tanto
Period
Around 1989–2019(Heisei)
Province
Wakayama
Signature
Signed
Measurements
Nagasa 24.4cmMotohaba 2.5cmKasane 0.7cm
Description

This is a tanto by Ryujin Taro Sadashige, whose real name is Adachi Shigefumi. Born in Showa 33 (1958), he studied under his father and later under Living National Treasure Gassan Sadakazu. This particular piece was exhibited at the 9th Omamori Katana Exhibition and features high-level koshirae crafted by modern artisans.

About the maker

Sadashige

貞茂

Kii · around 1989-2019

3 pieces on the market now

›
3 works by Sadashige on the market→
Sadashige — 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
S
Samurai Shokai
🇯🇵Ships from Japan
›
✓Verified dealersamuraishokai.jp
Settles in JPY
·Domestic shipping onlyWire transferCredit card
Return policy

Returns possible within 3 days of arrival. Customer pays return shipping and bank transfer fees. Excluded: condition differs from sale, 3+ days passed, overseas delivery, in-store purchases, and deposit transactions.

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

More works by Sadashige

View all →
Touken Komachi
Gendaitō
Katana - by Sadashige - Adachi Sadashige with KoshiraeKatana - by Sadashige - Adachi Sadashige with Koshirae

Katana

BySadashige
¥550,000
E-sword
Gendaitō
Tanto - by Sadashige - Ryujin-ju Minamoto Sadashige saku (Ryujintaro Minamoto Sadashige) - March, Heisei 2Tanto - by Sadashige - Ryujin-ju Minamoto Sadashige saku (Ryujintaro Minamoto Sadashige) - March, Heisei 2

Tantō

BySadashige
¥250,000

Previously sold by Sadashige

Giheiya
Gendaitō
Tanto - by Sadashige - Gendaito Tanto: Ryujin Taro Minamoto Sadashige with ShirasayaTanto - by Sadashige - Gendaito Tanto: Ryujin Taro Minamoto Sadashige with Shirasaya
Sold

Tantō

BySadashige
SOLD
Giheiya
Gendaitō
Katana - by Sadashige - Ryujin Taro Minamoto Sadashige with KoshiraeKatana - by Sadashige - Ryujin Taro Minamoto Sadashige with Koshirae
Sold

Katana

BySadashige
SOLD
Giheiya
Tanto - by Sadashige - Ryujin Taro Minamoto SadashigeTanto - by Sadashige - Ryujin Taro Minamoto Sadashige
Sold

Tantō

BySadashige
SOLD
Samurai Museum
Gendaitō
Tanto - by Sadashige - Modern Authentic Japanese Sword Gendaito Shirasaya Tanto signed by Minamoto SadashigeTanto - by Sadashige - Modern Authentic Japanese Sword Gendaito Shirasaya Tanto signed by Minamoto Sadashige
Sold

Tantō

BySadashige
SOLD
Giheiya
Gendaitō
Tanto - by Sadashige - Minamoto Sadashige (Ryujin Taro Minamoto Sadashige) - 7 Sun 9 Bu, with ShirasayaTanto - by Sadashige - Minamoto Sadashige (Ryujin Taro Minamoto Sadashige) - 7 Sun 9 Bu, with Shirasaya
Sold

Tantō

BySadashige
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