Nihonto Appraisal and Selling: A Practical Guide to Selling Inherited or Collected Swords

Things You Should Know Before Selling a Japanese Sword

A Japanese sword has appeared as an inheritance from a family member, you want to organize a long-standing collection, or you may have a need for funds—the motivations for parting with a Japanese sword vary. However, unlike ordinary household goods, Japanese swords are special items that require registration certificates under the Swords and Firearms Control Law (Sword Law). Confirming whether or not you have a registration certificate before sale is the first step.

A sword with a registration certificate can be legally owned and sold. If you do not have a registration certificate or if the details on the certificate do not match the sword's characteristics, you must consult with a sword dealer or your prefectural board of education. Buying and selling without a registration certificate is illegal, so confirming the status is essential.

Types and Characteristics of Appraisers

Japanese sword appraisers and sellers can be broadly divided into the following three categories.

• Sword specialty dealers (sword shops): These are dealers with specialized knowledge of Japanese swords and can be expected to provide fair appraisals. It is important to select trustworthy dealers such as member dealers of the public interest organization Japan Art Sword Preservation Association (NBTHK). Dealers who set up booths at sword markets nationwide are also included here.
• Antique and fine art dealers: While they may handle swords, they often lack the specialization of sword specialty dealers. If they cannot properly evaluate the value of a sword, the appraisal may be lower than market value.
• Auctions: In auctions held by fine art auction houses, sword collectors participate, so rare swords may fetch high prices. Note that the Osaka Art Club and Tokyo Art Club are organizations whose primary business is conducting bidding and exchange meetings among art dealers, and are different from public auctions open to general collectors. However, commissions (approximately 10–15% of the hammer price) are incurred, and it may take time to complete the sale.

Main Factors Affecting Price

The sale price of a Japanese sword is influenced by a combination of the following factors.

• Presence or absence of an appraisal certificate: When there is an appraisal certificate from NBTHK or the Honami family (with grades such as preserved sword, specially preserved sword, or important sword), authenticity and quality are objectively guaranteed, so the price may increase significantly. Swords without appraisal certificates are treated as "non-appraised items" and tend to see lower prices even at the same quality level.
• Condition of the sword: The presence or absence of rust, blade chipping (hakobore), blade cutting (hagire), and polishing adjustments (suriage) affects the price. In particular, blade cutting is considered a fatal flaw that is difficult to repair, and significantly reduces value. The condition of the polish (whether it is in good condition or requires polishing) is also important.
• Period and swordsmith: Works by master craftsmen from the ko-to period, particularly those from the Kamakura to Nanboku-Cho periods, tend to command high prices. Shin-to and shin-shin-to swords from the Edo period also show significant price variations depending on the swordsmith. Military swords from the Showa period (mass-produced items) generally command lower prices.
• Completeness of accessories: When all of shirasaya, koshirae, sword box, and registration certificate are present, the impression is favorable. The condition of the koshirae (particularly, period koshirae has value even as a standalone item) is also considered.

The Importance of Multiple Appraisals and Comparative Estimates

Appraisals of Japanese swords can vary significantly depending on the dealer. Rather than deciding with just one dealer, we strongly recommend requesting appraisals from multiple specialists and comparing them. Dealers specializing in swords often present fairer prices than large chain antique dealers.

Additionally, appraisals are free in principle (some auction houses charge submission fees). Be wary of dealers who claim that appraisals incur a fee.

Preparation Before Sale—Organizing Documentation and Cleaning

As preparation before sale, first make copies of the registration certificate. Next, if you have documents from when the sword was purchased, past appraisal certificates, or materials regarding provenance, organizing them will serve as a reference for appraisal.

However, it is better not to perform maintenance on the sword itself (polishing and rust removal) yourself. Amateur polishing damages the hamon and jihada, thereby reducing value. While ordinary maintenance with uchiko is acceptable, polishing should be left to specialists (polishers).

Online Marketplaces and Direct Sales

In recent years, online marketplaces specializing in Japanese swords have been established, and opportunities for direct transactions between collectors have increased. However, in person-to-person transactions, disputes over authenticity and determining fair prices can be difficult, so for first-time sales, it is safer to go through a specialist dealer.

Once you have your registration certificate, appraisal certificate, condition information, and provenance materials in order, requesting appraisals from multiple specialists—following this simple procedure is the most reliable path to selling at a fair price.

Procedures After Sale—Name Change and Registration Certificate Handling

After selling a sword, the name change on the registration certificate is handled by the buyer (dealer or individual). The seller is generally not required to handle the name change procedure. However, it is recommended to keep a record of the transaction (transaction details, receipt, etc.) for your records.

If you choose to dispose of the sword, notification to the police is required. No fees are incurred. Discarding it outright is illegal, so proper notification is essential even when disposing of a sword.

When selling a sword received as an inheritance, some dealers may request documentation proving you are the heir (such as a family register certificate). Confirming this beforehand will streamline the process. Because of their rarity and cultural value, selling a Japanese sword through proper procedures and with specialized knowledge brings the best outcome for both seller and buyer.