Inheriting Japanese Swords: Registration Transfer, Storage, and Estate Procedures

When a Japanese Sword Is Found Among Inherited Belongings

When sorting through family inherited belongings, a Japanese sword may be discovered in a closet or storage building. For heirs, swords are an unfamiliar form of property, and it is not uncommon to hear concerns such as "I don't know how to handle this" or "I'm worried it might be illegal." In reality, if the sword is accompanied by a registration certificate (officially called the Firearms and Swords Registration Certificate), possession is lawful, and inheritance, management, and sale can proceed without issue if proper procedures are followed. This article explains the inheritance process through specific steps.

First Steps: Checking for a Registration Certificate

To legally possess a Japanese sword, a Firearms and Swords Registration Certificate (hereafter "registration certificate") issued by the prefectural Board of Education is required. A registration certificate is issued for each sword and includes information such as blade length, sori (反り), and the number and shape of mekugi (目釘) holes.

When a sword is discovered among inherited belongings, first check whether a registration certificate is present alongside the blade. The procedure differs depending on whether the certificate is found or not.

If the registration certificate is present: The sword may be treated as having been legally possessed, and the heir may continue possession as-is. However, there is an obligation to file a notification within 20 days (detailed below).

If the registration certificate is not present: Within 20 days of discovery, you must file a discovery report with the nearest police station, as mandated by the Firearms and Swords Possession Regulation Act. After receiving a certificate of discovery report from the police, legal possession is established upon registration by the prefectural Board of Education's Registration Review Council. For swords that cannot be registered (such as those with broken blade bodies or similar damage), guidance on disposal procedures will be provided.

Filing Procedures for Heirs: The 20-Day Rule

Under the Firearms and Swords Possession Regulation Act, when inheriting a registered sword, you must file a change-of-owner notification with the prefectural Board of Education listed on the certificate within 20 days of learning of the inheritance. Police notification or new possession permit application is not required; this is purely a reporting procedure to the Board of Education.

Documents and information required for filing:

• Registration certificate (original copy)
• Documentation proving inheritance status (family register excerpts, etc.)
• Name, address, and date of death of the previous holder (decedent)

The Board of Education office will provide the form for the change-of-owner notification. This filing does not rewrite the registration certificate itself (the certificate does not include the holder's name); rather, it functions as a "report to identify the new holder." After completing this procedure, the heir may legally possess the sword.

If the Registration Certificate Is Lost or Cannot Be Found

When the registration certificate is not available, proceed in the following order:

1. Contact the Board of Education: Since registration certificates are managed by the prefectural Board of Education, contact the Board of Education in the previous holder's jurisdiction to inquire whether certificate reissuance is possible. If registration records remain, reissuance may be available.
2. File a discovery report with police: If reissuance is not possible, submit a firearms and swords discovery report to the nearest police station and obtain a certificate of discovery report. Subsequently, the sword undergoes registration review by the prefectural Board of Education's Registration Review Council (as an unregistered item).
3. If registration is not possible: Should the sword have lost its form as a blade due to rust or breakage, follow police guidance for disposal or deactivation procedures.

Options After Inheritance: Storage, Sale, or Donation

After completing the procedures, there are three main options:

Storage: If you wish to continue storing the sword as an inherited piece at home, proper environmental management is essential. Swords are sensitive to temperature and humidity fluctuations, and rust develops readily in high-humidity environments. Store the sword in a sword bag or sword box designed for this purpose, and apply oil regularly during storage.

Sale to sword dealers or auction: If you wish to convert the sword's value to cash, consulting a sword dealer for appraisal or listing it with a sword-specialist auction house are common methods. When selecting a trustworthy sword dealer, membership in the Society for the Preservation of Japanese Art Swords (NBTHK) or affiliation with the All-Japan Sword Dealers Cooperative is a reliable indicator.

Donation to a museum or shrine: For renowned swords of Important Cultural Property caliber, or when you wish to preserve the sword as a cultural property in respect of the previous holder's wishes, donation to a local museum, art gallery, or shrine is also an option. Before making a donation, you should always consult with the receiving institution and seek their evaluation of the sword's cultural property status.

Tax Evaluation of Inheritance and the Asset Value of Swords

When reporting a Japanese sword as inherited property, the valuation method is based on either "comparable transaction prices" or "expert opinion valuations," similar to other works of art. Reference the prices of comparable items traded in the market, and request an appraisal from a sword authentication specialist if necessary.

Swords designated as Important Cultural Properties or Important Art Objects are inherited while maintaining their designation status, though their assessed value may increase. It is important to consult with a tax accountant early and file appropriate returns.

What Not to Do: Common Mistakes in Sword Inheritance

The following are common mistakes that occur when inheriting swords. While none stem from intentional wrongdoing, each carries legal risk or potential damage to the sword's asset value, so caution is warranted.

Failing to file required notifications: The most common mistake is neglecting to file a change-of-owner notification due to complacency about having the registration certificate. Filing a change-of-owner notification with the prefectural Board of Education within 20 days is a legal obligation—the presence of a registration certificate does not exempt you from this requirement.

Unauthorized disposal: It is strictly forbidden to discard the sword in non-flammable refuse because it is rusted and appears worthless. Regardless of registration status, disposal of swords must follow proper procedures and be coordinated with police.

Amateur maintenance: Removing rust with sandpaper or metal polish, or honing the blade with an ordinary whetstone, will severely damage the sword's artistic value. Restoration of a rusted sword is the work of a specialist polisher (toshin—研師). The proper course at the inheritance stage is to maintain the sword in its present state—keeping it oiled and stored—then consult an expert for evaluation during appraisal.

Confusing certificates with swords: When multiple swords are found, each certificate corresponds to one sword. Match the blade length, sori, and number of mekugi holes listed on the certificate with the physical sword to confirm which certificate belongs to which sword before proceeding with procedures. If a certificate remains that cannot be matched, consult with the issuing Board of Education.

Transferring to relatives without notification: When transferring a sword to another family member, the recipient must file a change-of-owner notification. Important to note: this requirement is not waived simply because the transfer occurs between relatives.

Summary: File a Change-of-Owner Notification with the Prefectural Board of Education Within 20 Days

When a Japanese sword is discovered among inherited belongings, there is no need to rush, but filing a change-of-owner notification with the prefectural Board of Education listed on the certificate within 20 days is most critical (if the sword lacks a registration certificate, filing a discovery report with the nearest police station takes priority). Once you complete the filing, possession becomes lawful, and you can then make decisions about storage, sale, or donation at your leisure. If you are uncertain how to handle the inherited sword, consulting with a local sword dealer or the prefectural Board of Education is recommended.