Nihonto Price Trends 2026: How Yen Depreciation, Global Demand, and Certification Are Reshaping the Market

How Yen Depreciation Reshaped the Nihonto Market

The yen's sustained weakness from 2024 to 2026 has brought dramatic changes to the nihonto market. As the yen's purchasing power declined against the US dollar, euro, and Taiwan dollar, foreign collectors began viewing Japanese swords as attractively priced cultural investments.

Major auction houses and dealers report two to three times more inquiries from foreign buyers compared to just two or three years ago, particularly from Chinese-speaking regions such as Taiwan, Hong Kong, and Singapore, and from Western enthusiasts of Japanese culture.

Price Trends by Category

Koto (pre-1596): Tachi and uchigatana from the Kamakura and Muromachi periods command premium prices only when accompanied by NBTHK "Juyo Token" certification or higher. Bizen and Soshu school masterpieces see fierce domestic and international competition, with auction results of ¥5 million to tens of millions not uncommon. Uncertified koto face skepticism due to authenticity risks, creating a bifurcated market.

Shinto and Shinshinto (1596–1876): Edo-period swords maintain steady demand as symbols of samurai culture. Works by renowned smiths like Nagasone Kotetsu and Suishinshi Masahide hold their value, while unattributed or doubtful pieces are soft. Well-polished Shinshinto swords from the Tenpo reform period are popular with mid-range collectors.

Gendaito (1953–present): Modern swords attract demand from iaido practitioners and martial artists. Works by Living National Treasures and celebrated smiths exceed ¥1 million; emerging young smiths command ¥500,000–¥1,500,000, with speculative buying on future appreciation.

The NBTHK Certification Premium

NBTHK certification significantly affects market prices. "Tokubetsu Juyo" certification can command three to five times the price of an equivalent uncertified sword. "Juyo Token" adds 150–300%, while "Hozon" and "Tokubetsu Hozon" add modest 10–50% premiums. Foreign buyers increasingly treat NBTHK certification as a prerequisite for purchase.

Outlook

As long as yen weakness persists, overseas demand will provide price support. However, increased supply from aging collectors liquidating estates poses a downside risk. Long-term, AI-assisted appraisal tools may increase market transparency and attract new buyers — whether this proves positive for prices depends on whether it raises or erodes trust in the industry.