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Updated: 20 Jul 2024


Antique Japanese Sword Katana Attributed to Den Rai Kunimitsu


DELIVERY TIME: Approx. 1-1.5 months
*We ship from Tokyo, Japan. There might be delay in shipment depending on countries.

USA, Canada, Mexico, Germany , Belgium, France, Finland, Hong Kong, Australia
*Please contact us prior to purchase if your country isn’t listed.

INCLUDED: NBTHK JUYO TOKEN Certificate, Shirasaya Case, Koshirae Case, Traditional Sword Carrying Case, Sword Maintenance Kit, Full Exportation Support

Category Katana (KOTO)
Age late Kamakura- early Nanbokucho period (1326-1351)
Swordsmith Attributed to Den Rai Kunimitsu (伝来国光: Unsigned)
Certificate NBTHK JUYO TOKEN Certificate
Location Yamashiro province (Today’s Kyoto prefecture)
Blade Size Cutting Edge Length: 69.6 cm (27.4 inches)
Curvature: 1.8 cm (0.70 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.



Antique Japanese Sword Katana Attributed to Den Rai Kunimitsu with NBTHK JUYO TOKEN Certificate


 This blade is attributed to Den Rai Kunimitsu, active during the late Kamakura- early Nanbokucho period (1326-1351). He belonged to Rai school, which was prosperous in Yamashiro province (Kyoto prefecture) during the mid-Kamakura-Nanbokucho period. Rai Kunimitsu was the second son of Rai Kunitoshi, and he was also known as Jiro Hyoueno Jo. Rai school was originally founded by Rai Kuniyuki and was taken over by Rai Kunitoshi, and then Kunimitsu became the head of the school in his career.

 Three of his signed works are designated national treasures of Japan, and 22 swords are classified as Important Cultural Property.

 Yamashiro province was famous for its sword making style called YAMASHIRO-DEN. YAMASHIRO-DEN’s origin dates back to the Heian period (794 A.D), when the capital city was moved from Nara to Kyoto. The swordsmiths in Yamashiro province initially prospered by forging swords for court nobles and imperial families. Later on, they also forged swords for feudal lords after Samurai military government took control of Japan. There are so many renowned swordsmiths from this region.

 It is said that the founder of YAMASHIRO-DEN was Sanjo Munechika. And there are seven prestigious schools in this region. One of them is Rai school, where Kunimitsu belonged. Rai school and Aawata school are the most prestigious ones among YAMASHIRO-DEN. One of the most characteristics of YAMASHIRO-DEN is its elegant design and beautiful Jigane. This blade represents strong trait of YAMASHIRO-DEN. 


 This blade is appraised as a JUYO TOKEN (重要刀剣) issued by NBTHK (Nihon Bijutsu Touken Hozon Kyokai: 日本美術刀剣保存協会). This authentication paper was only given to authentic Japanese swords, exceptionally well preserved and of high quality with artistic value. JUYO is one rank higher than Tokubetsu Hozon. To be eligible for a Juyo Token, it needs to be appraised as a Tokubetsu Hozon Token first. It is extremely rare for an antique Japanese sword to be appraised as JUYO TOKEN, and it is highly desirable among Japanese sword collectors.


【 Blade】
Cutting Edge Length (Nagasa): 69.6 cm (27.4 inches)
Curvature (Sori): 1.8 cm (0.70 inches)

The crystalline structure which forms along the cutting edge of a blade as a result of the hardening process.
Jimon (Jihada):
Visible steel surface pattern created by folding and hammering during forging process.


Nakago: Nakago is the tang of the Japanese sword.

 Japanese swordsmiths left the black rust on the tang because it prevents red rust while the tang is in its handle. And the discoloration of the tang was created over time, and it is a great indicator for a Japanese sword specialist to estimate when the sword was forged.


Koshirae: Koshirae is the mounting of the Japanese sword. There are several parts that consist of Koshirae such as Saya (Scabbard), Tsuka (Handle), Tsuba (Handguard).

Fuchi-Kashira: A pair of matching sword fittings that cover the upper and bottom parts of its sword hilt.

Two people are engraved on this Fuchi Kashira. In addition, another person is designed on the Kojiri (鐺, the metal fitting that protects the tip of a scabbard) with the same type. We are unsure who they are. They appear to have continental clothing, hairstyles, and facial features. Especially the man who is designed on the Kojiri; he is a large man with a bearded face, wears military clothing and holds a long weapon in his hand. He looks dignified, making this Koshirae’s impressive atmosphere.

Tsuka and Menuki: Tsuka is the handle of the Japanese sword and Menuki is its decoration.

Three Koumoris (蝙蝠, bat) are the motifs of this Menuki. One of these bats is colored with golden paint on each Menuki. According to a theory, the continent largely influenced the introduction of bats as a pattern. This animal is a symbol of happiness and longevity. In the continent, it was popular as an auspicious pattern that brings good luck because its Japanese name letter “蝠” and another word “福 (happiness)” have the same sound. The design depicting five bats is called the Gofuku (五福) and symbolizes longevity, wealth, health, descendants, and prosperity.
Tsuba and Habaki: Tsuba is the handguard for the Japanese Sword and Habaki is the equipment to make the blade not touch its scabbard inside. It prevents the blade from getting rusty and chipped. 

You would find the same plant motif crests are designed on this Tsuba. This family crest is called the Umebachi Mon (梅鉢紋), which is derived from the Ume (梅, Japanese apricot blossom) pattern. The Ume pattern profoundly relates to the Tenjin (天神) faith. This belief honors the soul of Sugawara no Michizane (菅原道真, 845-903), and he cherished this flower. Michizane excelled in academics and was appointed and promoted by the emperor back then. However, other aristocrats envied his promotions, and Michizane was demoted Kyushu (九州) region, far from the capital. And he passed away two years later. After his death, the capital suffered great natural disasters. And people who opposed Michizane had unfortunate experiences. People thought that his spirit caused these things, and the capital was terrified at that time. One day, when such a situation continued, Michizane possessed a person and demanded to enshrine himself. The imperial court accepted his request and built a shrine in Kyushu to appease his spirit. This was managed by the Sugawara family, a family of scholars. And Michizane, who excelled in studies during his lifetime, came to be worshiped as the god of learning. Because of this background, it is said that many family crests with the Ume designs were used in the Kinki and Kita-Kyushu regions.

Saya: Saya is the scabbard for the Japanese sword.  

Authentication Paper: NBTHK JUYO TOKEN Certificate for the blade (No. 2229)

  NBTHK, also known as Nihon Bijutsu Touken Hozon Kyokai (the Society for the Preservation of the Japan Art Sword), is one of the oldest Japanese sword appraising organizations in modern-day Japan. They authenticated the blade on August 10th in the 42th year of Showa (1967). They appraised it as JUYO TOKEN, the blade exceptionally worth preserving for Japanese society. The purchaser will receive this original certificate as well. We can also translate what is written into English and make a PDF file for your record if you request.


Registration Number: Hyogo 119474
  The Board of Education in Hyogo prefecture issued a registration paper for this sword. It is called Jyu Token Rui Torokusho (銃刀剣類登録証). Bunkacho (The Agency for Cultural Affairs) acknowledges a Japanese sword with this paper as a work of art.
The sword needs to be traditionally hand-forged and made of Tamahagane carbon steel to be registered in the system. With this paper, its owner in Japan can legally own an authentic Japanese sword. Based on this registration number, we will apply for its export permit.
This paper will need to be returned to the board of education when the sword is being shipped abroad, but you can receive a copy of it. An English translation of this registration paper is available on request.

【About us】
 Samurai Museum is located in Tokyo, Japan, exhibiting antique artifacts related to the Samurai history. Samurai Museum Shop is the place for those who are interested in Japanese culture and craftsmanship. We deal with antique Samurai swords/armor, traditional crafts made in Japan and so on.

Japanese Sword& Export Process
 The Japanese swords we deal with are hand-forged edged swords made in Japan. It was made from the traditional carbon steel called TAMAHAGANE(玉鋼). Samurai Museum is familiar with the proper legal procedure for an antique/ authentic Japanese sword to be exported from Japan. We have sent more than 700 Japanese swords for the past few years (~2024) to amazing owners who appreciate its historical value.

 Each Japanese sword is registered under the Agency for Cultural Affairs and the Board of Education in Japan. They issue a registration paper for each Japanese sword for its owner in Japan to legally possess it. The Japanese sword with its registration paper means it was traditionally hand-forged in Japan.

 To legally export the sword from Japan to other countries, we will have to apply for its permit to the Agency for Cultural Affairs(Bunkacho) and return the original registration paper to the Board of Education. It normally takes around 2-4 weeks to receive this permit after submitting required documents. And we would like you to expect at least 1-1.5 months for your order to arrive at your given address after you ordered. For more detailed info, please click here.

 It is allowed for residents in Japan to own authentic Japanese swords without a special license as long as they come with registration papers. Please feel free to contact us if you are a resident of Japan, whether temporarily or permanently. We will also assist you when you leave Japan and need to obtain the export permit.

【Payment Method】
We accept payment through Stripe (Credit card), PayPal, Apple Pay or ChromePay, all of which are secure payment methods. Also, you don’t need to make an account on Stripe for the checkout. If you prefer other payment method, please contact us. After confirming your payment, we will apply for an export permit. You may either pay in JPY, USD, AUD, CAD,EUR CHF or GBP. The price is set in Japanese Yen. Prices in other currencies are automatically calculated based on the latest exchange rate. 

* If the amount is above 1 million JPY, Stripe or wire transfer will be the only options for payment.

 We have shipped authentic Japanese swords to the USA, Canada, Mexico, Germany , Belgium, France, Finland, Hong Kong, Australia. If you don’t live in these countries and like to order, please contact us first before making a purchase. We offer Free International Shipping as long as we can send antique Japanese swords by EMS. 

 We normally ship by EMS(Express Mail Service) provided by Japan Post. We will send you a tracking number for your order as soon as we hand it to the post office. We will put 100 % insurance on the shipping document without any extra charge. Based on the total amount, there might be a duty tax or other fee for you to pay, depending on the countries. We use package cushioning to protect the item and put it in a PVC pipe, which is one of the most secure packages because of its durability.

 It will normally takes 5-14 days for the item to arrive at your given address after we dispatch it. Time of delivery is estimated as accurately as possible by the carrier but does not take into account any delays beyond our control such as by inclement weather, post office holiday seasons.

* If you live in Australia and like to purchase an authentic Japanese sword, please click here to know the detail.

* If you live in the UK and like to purchase an authentic Japanese sword, please contact us first and click here to know the detail.

 Here is one of the reviews we received from a customer who purchased an authentic Japanese sword from us. For more reviews, please click here.
“My experience overall with the whole process was wonderful. I had many questions about the history and process to purchase these treasures. All my questions were answered very timely and complete. The staff is very knowledgeable and very well versed if any questions do arise.”

【How to make sure the condition】
 Please keep in mind that what you are going to purchase is an antique item. We uploaded high resolution photos for you to check its condition thoroughly. If you like to see more photos with different angles, please feel free to contact us. We will be happy to send them to you so that you can make informed decision. It is essential for us to know that you are happy with your choice of a sword. and we are prepared to use the best of our ability to serve you.

【How To Contact Us】
 Please contact us through email, Facebook Messenger or Live Chat if you have any questions. You can find each icon on the right side of the website. Please click one of them to reach us. We will reply to you within 1-2 business days.

The Art of Nihonto (Japanese Sword)
 Samurai’s history is a profound, eloquent legacy of ancient Japanese warriors in which millions of people worldwide are being fascinated. If you like to find out the art of Nihonto, please click here.

A Guide to Japanese Sword Maintenance
 After acquiring an genuine Japanese sword, it is also important to know how to take good care of it. Here is the special video for you. Mr. Paul Martin, Japanese sword expert, shows you how to give proper maintenance to your sword. By mastering how to clean the Japanese sword, its aesthetic beauty will last forever.

 When you purchase a Japanese sword from us, you can get a Free Japanese sword maintenance kit. It comes with four tools(Choji Oil, Uchiko Whetstone Powder, Peg remover, Oil Applicator). By watching the video instruction above , you can enjoy learning how to maintain your Japanese sword while appreciating it. If  you have any difficulty assembling the sword or cleaning the blade, you can feel free to contact us.







 Thank you for reading all the information on the page. If you have any difficulty choosing the right Japanese sword for you, we will be more than happy to help you find the one that speaks to you the most. Please feel free to contact us.


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