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Updated: 19 Jul 2025

SOLD

Antique Japanese Sword Tanto Signed by Tadamitsu
NBTHK Hozon Certificate

$7,073.56

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, 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 Tanto (古刀: KOTO)
Age Late Muromachi period
Swordsmith Osafune Tadamitsu (長船忠光)
Certificate NBTHK Hozon Certificate
Location Bizen province (Today’s Okayama prefecture)
Blade Size Cutting Edge Length: 19.6 cm ( 7.7 inches)
Curvature: 0.0 cm (0 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.

SOLD

Antique Japanese Sword Tanto Signed by Tadamitsu with NBTHK Hozon Certificate

【Description】

 This blade was signed by Osafune Tadamitsu (長船忠光) in the late Muromachi period. Osafune is one of the most prosperous schools in Bishu (備州) during the Muromachi period. Bishu (備州) is a larger area in today’s Okayama&Hiroshima prefecture. Bishu consists of Bizen (備前), Bitchu (備中), and Bingo (備後). 

 The maker’s name Tadamitsu was used for about 120 years from 1469- 1591 (Late Muromachi- Azuchi Momoyama period), and there were a few generations. We asumme this blade was forged by the late gen Tadamitsu, not the first gen.

 Those who forged swords in the Bizen province(Okayama prefecture) at the end of the Muromachi Period(1492-1569 A.D) are called Matsu Bizen(Matsu means the end). Tadamitsu school was one of the most famous schools, and it flourished for generations among Osafune schools.

 The swordsmiths in Bizen produced many swords during the Muromachi period, as it was in the middle of the Sengoku period(Warring State period). The demand for weapons increased among strong feudal lords. It would be nice to have a piece forged in the warring state period when there was so much rivalry between warlords. It was possible that this blade was ordered by a Samurai and he might have carried it in a battlefield.

The History of Bizen Osafune School
 It is said that Osafune school was founded by Mitsutada (光忠), who was active during the mid-Kamakura period. Bizen Osafune school was the biggest one of all other schools in Bizen province, and they received many orders from feudal lords or renowned Samurai. They were called Osafunemono and beloved by Samurai warriors.

 Among the swordsmiths who belonged to this school, Nagamitsu, Sanenaga, and Kagemitsu are known as Osafune Sansaku, the three renowned Osafune swordsmiths. There are also four other prominent swordsmiths who were from Bizen Osafune school. They are called Osafune Shiten-no, the four masters of Osafune school. Their names are Nagamitsu, Kanemitsu, Nagayoshi, and Motoshige.

 BIZEN is located near the Chugoku Mountains, where iron sands, one of the essential materials for making Japanese swords, were abundant. Furthermore, BIZEN swordsmiths had close access to Yoshi River, where they could find water and charcoal. This geological location contributed to the swordsmiths forging high-quality refined blades. We presume BIZEN was quite active in sword-forging from ancient times. It is said that BIZEN DEN was created by groups of swordsmiths there during the late Heian era (Late 12th century ). These ancient swordsmiths in Bizen province are called Ko-Bizen (Old Bizen) swordsmiths. By inheriting the sword forging techniques from Ko-Bizen swordsmiths, the Bizen Osafune school flourished from the mid-Kamakura period.

 

 This blade is appraised as a Hozon Touken (保存刀剣) 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, well preserved and high quality with artistic value. 

 

*Please keep in mind that there is a couple of Kitae Kizu on blade. If you like to see the detailed condition, please feel free to contact us.

 

【Blade】
Cutting Edge Length (Nagasa): 19.6 cm ( 7.7 inches)
Curvature (Sori): 0.0 cm (0.0 inches) 


 

Hamon
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.



Kissaki: Kissaki is the tip of the Japanese sword.

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.

  The dragonfly (蜻蛉:Tonbo) and the chrysanthemum (菊:Kiku) are depicted on this Fuchi Kashira. 

 Dragonflies have been inhabited in Japan for a long time. Since they prey quickly, their heroic figure was sometimes the object of belief. The dragonfly was called the Kachimushi (勝ち虫, winning insect) during the Warring States period because of its fearless character. Dragonflies fly around fast to catch pests, moving only forward, not backward. Therefore, people thought the behaviors of this insect showed the spirit of Futaiten (不退転); it is a state of mind or a state in which a person has some conviction and does not give in to difficulties. It is very persuasive that Samurai warriors cherished this design as an auspicious motif because of the spirit that Samurai should be prepared for the battlefields. Not only for sword mountings, dragonfly patterns were also incorporated into various items such as helmets, armor, battle coats, etcetera.

 The chrysanthemum was used as a medicine for obtaining a long life in China a long ago, and it was brought to Japan with this thought in the Nara period (648-781). It is one of the flowers which symbolizes fall, and people appreciate it very much since ancient times. As its petals form radially, the chrysanthemum has been likened to the sun. That is why this flower pattern is treated as the symbol of perpetual youth and longevity or good health. “Kiku no Gomon (菊の御紋)” is a kind of chrysanthemum pattern, and it has been used as the crest of the Emperor and the royal family in Japan so that it is well-known as a noble pattern.


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

 This Menuki has the Sensu (扇子: fan) on which the chrysanthemum (菊:Kiku) is depicted. This motif has been favored as an auspicious pattern representing development and prosperity. During the Heian period (平安, 794-1185/1192), aristocrats enjoyed elegant plays with fans and appreciated the fan itself as a noble item. A fan has a characteristic shape, and it is called Suehirogari (末広がり) in Japanese. Based on the idea that this shape implies a perspective of the future, people appreciate this design. The fan pattern also represents wealth because it was once available only for high-ranked people. In addition, people enjoy drawing various motifs such as animals, plants, geometric patterns, and auspicious patterns on the fan surface. That might also be why the fan motif is popular. Also, since ancient times, it was believed that gods resided in fans and had a protective meaning. It was also used as a military commander for Samurai families. That is why fan patterns have been incorporated into family crests.

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. 

 This Tsuba is fully decorated with the common motif: the Gosan-no-Kiri Mon (五三の桐紋). It comes from the Kiri (桐, paulownia) pattern, and the Gosan-no-Kiri Mon is a popular and famous design for this flower pattern. Golden paint is applied to each crest part, and this coloring makes an elegant color contrast of black and gold, expressing the luxurious appearance of each metal fittings.

 The Kiri (桐) pattern is generally composed of three standing straight inflorescences and three leaves. The number of blooming flowers at each inflorescence means the ranks of this design. The imperial family and national leaders back then once used this plant pattern. Today, this plant pattern is used as the crest of the Japanese Government. It is permitted to be used by ordinary households and is appreciated as their family crests. According to a tradition, the Houou (鳳凰: Fenghuang, a kind of sacred beast) rests its wings at the paulownia tree; therefore, it has come to be regarded as a sacred plant.

 Also, you would find its surface is finished with Nanako-Ji (魚子地) technique. This process makes a uniform minimal protrusions pattern by hitting the Nanako-Ji Tagane (魚子地鏨: a chisel for this technique), delicate fish egg-shaped protrusions are made on the surface of the metal. This process is often seen and is one of the elements that add gorgeousness to the appearance of metalworks.

KozukaKozuka is a small knife stored in Kozuka Hitsu(groove of the sheath of the Japanese sword).

 The motif of this Kozuka is the crane (鶴: Tsuru). You would find two cranes standing on the beach. There is a proverb that says cranes and turtles live a long life. It says cranes have even one thousand years lifespan; therefore, cranes have been considered as the symbol of longevity since a long time ago. Also, as cranes make compatible couples, its pattern represents happy marriage. Due to its pure white feathers and dignified appearance, it was favorably used as a good omen design for various ornaments or furnishings such as Kimono (着物, traditional Japanese costume) or Obi (帯, belt for Kimono). Senbazuru (千羽鶴, thousand cranes) is one of Japan’s most popular Origami craft, which is made of Origami paper. A thousand cranes of paper are jointed, and it is mainly used for wishes of recovering.

 Please keep in mind that the tip of this blade was broken off.

 

Saya: Saya is the scabbard for the Japanese sword.  

 This Saya is decorated with traditional Japanese craft method, the Raden (螺鈿: Raden). The Raden is a decorative technique that is often used for traditional craftwork. It uses the pearl part of seashells and puts it into the engraved surface of lacquer or wood. Thanks to its iridescent luster, it gives a luxurious look to works.

 Please keep in mind that there is a small mark that was repaired on this Saya.

 

Authentication Paper: NBTHK Hozon Certificate for the blade (No.3032009)

 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 Aug 25th in the 5th year of Reiwa (2023). They appraised it as Hozon Touken, the blade 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 125789

 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.

【Shipping】
 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.

【Review】
 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.

 

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 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.

SOLD

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