As you may know, our shop is handling authentic Japanese swords most of which come with the certificate.
NBTHK(Nihon Bijutsu Tohken Hozon Kyoukai) and NTHK(Nihon Tohken Hozon Kai) have appraised the traditional Japanese swords for many decades.
This time, we would like to show you how to read the NBTHK/NTHK certificate. Hopefully, this one helps you get more specific when choosing your Japanese sword.
I. NBTHK (Nihon Bijutsu Tohken Hozon Kyoukai) Certificate
As mentioned in the 4th episode(If you haven’t read the article: Ep.4 ), NBTHK is currently the leading organization for Japanese sword appraisal.
Here is the NBTHK certificate;

①:Title; Kanteisho
Title of the document, which means “Certificate” in Japanese.
NBTHK certificate should either be titled Kanteisho, Ninteisho, or Shiteisho, depending on the rank and when the document was issued.
②: Category/Signature/Length
It reads, ” 1. Katana, Mei(Signature) Hyo-Zaemon Fujiwara Yoshinobu From Shinano – Made in August, Genji 1st. Length: 73.6cm(29.0 inches)”.
③: Statement
Words of approval on the authenticity and rarity of the sword.
④: Issue date/Name of Organization
This means that the document was issued on February 19th, *Reiwa 2nd by NBTHK.
*Reiwa 2nd is 2020 in Julian’s calendar. Japan has another calendar based on the reign of the Japanese emperor.
⑤: Reference Number/Matching Stamp
The reference number is given randomly to prevent the certificate’s piracy.
The other half of the matching stamp is printed on the profile kept by NBTHK.
⑥: Ranking/Ranking Registration Number
特保(Tokuho) is short for Tokubetsu Hozon; It is the third-highest of four ranks given by NBTHK. The first and second ranks are rarely issued.
⑦: Registration Number by Board of Education
This sword has a record of registration in Saitama Pref. Board of Education on October 17th, Showa 26th (1951) as No.4773. It means that the sword had initially been registered to the organization on the given date.
NBTHK JUYO Token for sale
NBTHK Tokubetsu Hozon Token for sale
NBTHK Hozon Token for sale
II. NTHK(Nihon Tohken Hozon Kai) Certificate
As opposed to the NBTHK certificate, the NTHK Certificate offers a more elaborate explanation of the sword’s features. This is what it looks like.


①: Title;Kanteisho
Title of the document, which means “Certificate” in Japanese.
The NTHK certificate should either be titled Kanteisho, Shinteisho, or Yushuto, depending on the ratings and when the document was issued.
②: Category; Katana
③: Place of Origin/Artist
It reads as “Den Noshu Wakasanokami Ujifusa”.
It means that the sword is a work made in Noshu by the swordsmith called Wakasanokami Ujifusa.
④: Status/Length
The top two Kanji say, “Proved Authentic.”
Length: About 70cm(27.6inches)
⑤: Date of Issue
March 15th, Reiwa 2nd(2020)
⑥: Name of Organization/Representative
It says, “Non-Profitable Legal Corp, Nihon Tohken Hozon Kai. Principle Joji Miyano”
Cf) NTHK is registered as a Non-Profitable Organization(NPO) by the government.
Joji Miyano is the current principle of NTHK. It means that the document was issued by the principle himself.
<BACK>
1.Reference Number
2.Mei-Bun: Signature
It says, “Oh-Suriage Mumei,” which means that this sword was remade from Tachi into Katana, and there is no signature.
3.Tsukuri-Komi: Details
Oohira-Tsukuri – means that
Iori-Mune – means that the blade’s figure resembles a house with a triangle rooftop.
4.Kitae
5.Hamon
It says, “Asai Notare Midare,” which means the waves are thin and have round carves like mountains.
6.Boshi
It says, “Masskugu ni komaru ni kaeru,” which means that the blade’s tip slightly veers horizontally.
7.Cho-Koku; Sculpture
8.Chu-Shin
It refers to Nakago(Blade’s bottom).
9.Notes
“Made around the Genki period(1570-1573).”
10.Stamps of Appraisers
These appraisers are official members of NTHK.
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That is all about how to read the NBTHK/NTHK certificate.
We strive to present to you the purest joy and wholesomeness of owning the Japanese sword. It is our pleasure to introduce you to the culture, so please feel free to ask us if there is anything that does not make sense to you. Thank you for reading.
SAMURAI MUSEUM




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$37,474.04

DELIVERY TIME : Approx. 1-1.5 months
*We ship from Tokyo, Japan. There might be delay in shipment depending on countries.
SHIPPING TO :
USA, Canada, Mexico, Germany, Belgium, France, Finland, UK, Hong Kong, Australia
*Please contact us prior to purchase if your country isn’t listed.
INCLUDED : NBTHK Hozon Certificate, Shirasaya Case, Traditional Sword Carrying Case, Sword Maintenance Kit, Full Exportation Support
Category |
Tachi (KOTO) |
Age |
late Kamakura- early Nanbokucho period (1326-1351) |
Swordsmith |
Rai Kunimitsu (来国光) |
Certificate |
NBTHK Hozon Certificate |
Location |
Yamashiro province ( Today’s Kyoto Prefecture) |
Blade Size |
Cutting Edge Length: 64.1 cm (25.24 inches)
Curvature: 1.3 cm (0.51 inches) |
More photos& videos available on request. Please feel free to contact us.
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$13,879.27

DELIVERY TIME: Approx. 1-1.5 months
*We ship from Tokyo, Japan. There might be delay in shipment depending on countries.
SHIPPING TO:
USA, Canada, Mexico, Germany , Belgium, France, Finland, UK, Hong Kong, Australia
*Please contact us prior to purchase if your country isn’t listed.
INCLUDED: NTHK Kanteisho Certificate, Koshirae Case (Decorative Sword Mounting), Traditional Sword Carrying Bag, Sword Maintenance Kit, Full Exportation Support
Category |
Tanto (KOTO)
|
Age |
1324-1326 (Shochu period, The end of Kamakura period) |
Swordsmith |
Bizen koku Osafune ju Shigezane (備前国長船住重真) |
Certificate |
NTHK Hozon Certificate |
Location |
Bizen province (Today’s Okayama prefecture) |
Blade Size |
Cutting Edge Length: 25.0 cm (9.84 inches)
Curvature: 0.1 cm (0.04 inches)
|
More photos& videos available on request. Please feel free to contact us.
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$7,633.60

DELIVERY TIME : Approx. 1-1.5 months
*We ship from Tokyo, Japan. There might be delay in shipment depending on countries.
SHIPPING TO:
USA, UK, Canada, Mexico, Germany , Hong Kong, UK, France, Australia
*Please contact us prior to purchase if your country isn’t listed.
INCLUDED: NBTHK Tokubetsu Hozon Certificate, Shirasaya Case (Plain Wooden Case), Koshirae Mounting, Traditional Sword Carrying Case, Sword Maintenance Kit, Full Exportation Support
Category |
Wakizashi (KOTO)
|
Age |
Late-Muromachi Period |
Swordsmith |
Ryokai (了戒) |
Certificate |
NBTHK Tokubetsu Hozon Certificate |
Location |
Bungo province (today’s Oita prefecture) |
Blade Size |
Cutting Edge Length: 39.1 cm ( 15.4 inches)
Curvature: 0.78 cm (0.31 inches)
|
More photos& videos available on request. Please feel free to contact us.
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$10,409.46

DELIVERY TIME: Approx. 1-1.5 months
*We ship from Tokyo, Japan. There might be delay in shipment depending on countries.
SHIPPING TO:
USA, Canada, Mexico, Germany , Belgium, France, Finland, Hong Kong, Australia
*Please contact us prior to purchase if your country isn’t listed.
INCLUDED: NBTHK Hozon Certificate, Shirasaya Case, Traditional Sword Carrying Bag, Sword Maintenance Kit, Full Exportation Support
Category |
Katana (SHINTO)
|
Age |
Late Muromachi period (1661-1681) |
Swordsmith |
Signed by Tanba no Kami Yoshimichi (丹波守吉道) |
Certificate |
NBTHK Hozon Certificate |
Location |
Yamashiro Province (Today’s Kyoto) |
Blade Size |
Cutting Edge Length: 73.9 cm ( 29.1 inches)
Curvature: 15.1 cm (2.54 inches)
|
More photos& videos available on request. Please feel free to contact us.
*No Coupon Code cannot be applied to this sword.
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$4,510.76

DELIVERY TIME : Approx. 1-1.5 months
*We ship from Tokyo, Japan. There might be delay in shipment depending on countries.
SHIPPING TO :
USA, Canada, Mexico, Germany, Belgium, France, Finland, UK, Hong Kong, Australia
*Please contact us prior to purchase if your country isn’t listed.
INCLUDED : NBTHK Tokubetsu Kicho Certificate for the blade, Koshirae Case (Decorative Sword Mountings), Traditional Sword Carrying Bags, Sword Maintenance Kit, Full Exportation Support
Category |
Wakizashi (SHINTO) |
Age |
Early Edo period |
Swordsmith |
Bitchu no Kami Tachibana Yasuhiro (備中守橘康広) |
Certificate |
NBTHK Tokubetsu Kicho Certificate |
Location |
Settsu province (Today’s Osaka ) |
Blade Size |
Cutting Edge Length: 49.7 cm (19.5 inches)
Curvature: 0.8 cm (0.31 inches)
|
Thank you for visiting our website. This sword was sold as each antique Japanese sword is one of a kind. However, we might be able to show you something similar because we have various types of swords available. Also, there are ones that aren’t listed on the website yet. Our customer service will help you find your ideal blade you will cherish for generations. Please feel free to contact us or check the list of swords. We will be more than happy to help you.
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$5,898.69

DELIVERY TIME : Approx. 1-1.5 months
*We ship from Tokyo, Japan. There might be delay in shipment depending on countries.
SHIPPING TO :
USA, Canada, Mexico, Germany , Belgium, France, Finland, Hong Kong, Australia
*Please contact us prior to purchase if your country isn’t listed.
INCLUDED : NBTHK Tokubetsu Hozon Certificate , Shirasaya Case, Koshirae Case, Traditional Sword Carrying Case, Sword Maintenance Kit, Full Exportation Support
Category |
Wakizashi (KOTO)
|
Age |
Late Kamakura – Early Nanbokucho period
(Late 13th- Early 14th century) |
Swordsmith |
Attributed to (伝青江: Unsigned) |
Certificate |
NBTHK Tokubetsu Hozon Certificate |
Location |
Bitchu province (Today’s Okayama prefecture) |
Blade Size |
Cutting Edge Length : 45.4 cm ( 17.8 inches)
Curvature: 0.8 cm ( 0.31 inches)
|
More photos& videos available on request. Please feel free to contact us.
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$11,103.42

DELIVERY TIME : Approx. 1-1.5 months
*We ship from Tokyo, Japan. There might be delay in shipment depending on countries.
SHIPPING TO :
USA, Canada, Mexico, Germany , Belgium, France, Finland, Hong Kong, Australia
*Please contact us prior to purchase if your country isn’t listed.
INCLUDED : NBTHK Tokubetsu Hozon Certificate for the blade, Shirasaya Case, Koshirae Case, Traditional Sword Carrying Case, Sword Maintenance Kit, Full Exportation Support
Category |
Tanto (GENDAITO)
|
Age |
The 15th year of the Showa era (1940) |
Swordsmith |
Gassan Sadakatsu (月山貞勝) |
Certificate |
NBTHK Tokubetsu Hozon Certificate |
Location |
Osaka prefecture |
Blade Size |
Cutting Edge Length: 25.9 cm (10.1 inches)
Curvature: 0.0cm (0.0 inches)
|
More photos& videos available on request. Please feel free to contact us.
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$8,327.56

DELIVERY TIME : Approx. 1-1.5 months
*We ship from Tokyo, Japan. There might be delay in shipment depending on countries.
SHIPPING TO :
USA, Canada, Mexico, Germany, Belgium, France, Finland, UK, Hong Kong, Australia
*Please contact us prior to purchase if your country isn’t listed.
INCLUDED : NBTHK Hozon Certificate, Koshirae Case (Decorative Sword Mounting), Shirasaya Case, Traditional Sword Carrying Case, Sword Maintenance Kit, Full Exportation Support
Category |
Katana (KOTO-SHINTO) |
Age |
Late Muromachi period-early Edo period |
Swordsmith |
Attributed to Takada (高田: Unsigned) |
Certificate |
NBTHK Hozon Certificate |
Location |
Bungo province (Today’s Oita prefecture) |
Blade Size |
Cutting Edge Length: 81.8 cm (32.2 inches)
Curvature: 1.4 cm (0.55 inches) |
More photos& videos available on request. Please feel free to contact us.
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$10,062.47

DELIVERY TIME: Approx. 1-1.5 months
*We ship from Tokyo, Japan. There might be delay in shipment depending on countries.
SHIPPING TO:
USA, Canada, Mexico, Germany, Belgium, France, Finland, UK, Hong Kong, Australia
*Please contact us prior to purchase if your country isn’t listed.
INCLUDED: NBTHK Hozon Certificate, Koshirae Case (Decorative Sword Mounting), Shirasaya Case, Traditional Sword Carrying Bag, Sword Maintenance Kit, Full Exportation Support
Category |
Katana (KOTO) |
Age |
Estimated Mid-Late Muromachi period
(Late 15th century-early 16th century) |
Swordsmith |
Attributed to Mino Senjuin (美濃千手院: Unsigned) |
Certificate |
NBTHK Hozon Certificate |
Location |
Mino province (today’s Gifu prefecture) |
Blade Size |
Cutting Edge Length: 71.6 cm (28.1 inches)
Curvature: 2.2 cm (0.86 inches) |
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$12,491.35

DELIVERY TIME : Approx. 1-1.5 months
*We ship from Tokyo, Japan. There might be delay in shipment depending on countries.
SHIPPING TO :
USA, Canada, Mexico, Germany, Belgium, France, Finland, UK, Hong Kong, Australia
*Please contact us prior to purchase if your country isn’t listed.
INCLUDED : NBTHK Koshu Tokubetsu Kicho Certificate for the blade, Shirasaya Case, Koshirae Case (Decorative Sword Mountings), Traditional Sword Carrying Bags, Sword Maintenance Kit, Full Exportation Support
Category |
Wakizashi (SHINTO) |
Age |
Early Edo period (mid-17th century) |
Swordsmith |
Nagasone Okisato Nyūdō Kotetsu (長曽祢興里入道乕徹) |
Certificate |
NBTHK Koshu Tokubetsu Kicho Certificate |
Location |
Musashi province (Today’s Tokyo) |
Blade Size |
Cutting Edge Length: 54.5 cm (21.4 inches)
Curvature:1.4 cm (0.55 inches)
|
More photos& videos available on request. Please feel free to contact us.