Japan's Sword Registration System: A Complete Guide to the Firearms and Swords Control Law and Prefectural Board of Education Notification Procedures

Why Registration Certificates Are Needed for Japanese Sword Ownership

In Japan, under the "Gun and Sword Control Law," the possession of swords with blade length of 15 centimeters or longer is in principle prohibited. However, Japanese swords recognized as having cultural value as art objects or crafts can be legally possessed if one has a "registration certificate" issued by the prefectural board of education.

The registration certificate system was introduced when the Gun and Sword Law was enacted in 1958. It was designed as a system to protect and manage as cultural properties the vast numbers of swords and blades that had circulated among the general public, including military swords manufactured before and during wartime, without uniformly confiscating them. Currently, the estimated number of registered swords legally possessed within Japan is said to be over 2 million.

The registration certificate is a document that is attached to the sword itself and is managed as an integral part of the sword. Even if the holder changes (through sale, inheritance, or gift), the registration certificate transfers along with the sword, and possessing a sword without a registration certificate is a legal violation.

How Registration Certificates Work and Their Contents

The registration certificate is a public document issued by each prefectural board of education, with the following information recorded on an A4-size sheet of paper.

Main items listed:

• Registration number (prefecture + unique number)
• Type of sword (tachi, wakizashi, tanto, spear, naginata, ken, etc.)
• Blade length (length of the blade)
• Curvature (sori) measurements
• Number of mekugi holes (holes in the nakago)
• Signature (maker's signature; if unsigned, noted as "mumei")
• Shape (construction of the blade, etc.)
• Date of issuance and issuing prefecture

The content recorded on the registration certificate describes the physical characteristics unique to the sword, but does not guarantee the authenticity of the sword. The value and authenticity of swords are evaluated separately by authentication organizations such as NBTHK (Society for Preservation of Japanese Art Swords).

Procedures for Reporting Unregistered Swords

When unregistered swords are discovered during estate settlement, warehouse cleanup, or property inspection after real estate purchase, the discoverer must promptly report it to the nearest police station. Reporting to the police is mandatory, and failure to do so can result in violation of the Gun and Sword Law.

Procedures for reporting unregistered swords:

1. Report to the police station: Promptly (usually within several days) contact the Community Safety Division of your nearest police station, either bringing the sword with you or reporting its location.
2. Issuance of custody certificate: The police take custody of the sword and issue a "custody certificate."
3. Review by board of education: The sword is referred from the police to the prefectural board of education, which examines whether it qualifies for registration (has value as an art object or craft).
4. Registration examination (authentication session): The sword is examined at the "registration examination" held periodically by the board of education. Swords with blade length of 15 centimeters or longer that have the shape and sharpness suitable for use in swordplay are eligible for registration.
5. Issuance of registration certificate: Swords that pass examination are issued a registration certificate.

Swords judged unsuitable for registration at examination (military swords with no artistic value, poor-quality pieces, swords with damaged blades, etc.) may be discarded. Therefore, it is recommended to consult with experts (sword dealers, lawyers) first regarding the handling of unregistered swords.

Procedures for Changes, Loss, and Name Changes of Registration Certificates

Loss of registration certificate: If you lose a registration certificate, you can submit a "registration certificate reissuance application" to the prefectural board of education that issued it. The application requires the actual sword and application documents. Reissuance may take anywhere from several weeks to several months.

Change of holder (in case of sale or gift): When the ownership of a sword changes, the new owner must submit a "change of possession notification" to the prefectural board of education of their place of residence within 20 days of acquisition (Gun and Sword Law Article 14). The procedure is relatively simple and is completed by simply mailing or submitting at the office a copy of the registration certificate and the notification form.

In case of inheritance: Similarly, when a decedent passes away, heirs must submit a change of possession notification within 20 days of acquisition. Regarding inheritance tax valuation, registered art swords are evaluated as "general movable property," with special treatment in the case of designation as important cultural property.

Exporting to Overseas and Export Procedures

When exporting swords with registration certificates held within Japan to overseas, procedures based on the Cultural Properties Protection Law must be followed.

Export as art objects or crafts (including temporary export): You must submit a "cultural property export permission application" to the Agency for Cultural Affairs. Export of important cultural properties and important art objects is in principle prohibited, and temporary export is permitted only for special reasons. General registered swords can be exported if permission is granted after application, but the procedures take a certain amount of time.

Customs declaration: You are required to present the sword, registration certificate, and export permission at customs when leaving the country. Export of swords without a registration certificate is prohibited, and violation constitutes a violation of the Gun and Sword Law.

Regulations of importing countries: When exporting swords, you must also check the regulations of the importing country. In the United States, blade length restrictions vary by state, and in EU countries, permission conditions also differ. It is essential to confirm in advance with the embassy or consulate of the importing country or with specialized dealers.

Registration Certificates and Sword Value Evaluation—Relationship with NBTHK Authentication

The registration certificate is proof that "possession is legal," but it does not guarantee the quality, authenticity, or value of the sword. Separately, the authentication certificate issued by NBTHK (Society for Preservation of Japanese Art Swords) serves to evaluate the artistic value and authenticity of swords.

NBTHK authentication certificates have four levels: "hozon token" (preservable sword), "tokubetsu hozon token" (specially preservable sword), "juyo token" (important sword), and "tokubetsu juyo token" (specially important sword). In particular, swords with authentication certificates of "important sword" or higher see dramatically higher market valuations.

For sword acquisition by collectors or for investment purposes, verifying the presence or absence of the registration certificate and then checking the presence or absence and level of NBTHK authentication certificates constitutes basic due diligence.

The registration certificate system is a unique mechanism that "protects Japanese swords as cultural properties while allowing private circulation," and the existence of this system ensures the transparency and legal stability of Japan's sword market. When acquiring a sword for the first time, the first step is to compare the content of the registration certificate with the actual sword and confirm that the recorded information matches.