Japan Numismatic Dealers Association

The Japan Numismatic Dealers Association (JNDA; Japanese: 日本貨幣商協同組合) is a cooperative trade association of coin dealers organized across Japan. According to its official website, it was established in August of the 44th year of the Showa era (1969), aiming to promote coin collecting, and is made up of roughly 90 representative dealers nationwide. Its membership is described as about 75 dealers in its own history page, reflecting the association's evolving roster. The association is best known for two core functions. First, it issues appraisal certificates (鑑定書) that it describes as the most trusted and the only official certificates of their kind in Japan, produced by an appraisal committee of specialists in Japanese and foreign old coins. Second, it publishes the annual 'Japanese Coin Catalogue' (日本貨幣カタログ), which has been issued every year since 1967 and serves as a standard reference for collectors and dealers. JNDA also organizes coin events and fairs. It hosts the Tokyo International Coin Convention each spring, with backing from the Ministry of Foreign Affairs, the Agency for Cultural Affairs, and the Japanese Red Cross Society, and with participation from mints at home and abroad. It also runs regional shows such as the Osaka Coin Show and the Nagoya Coin Show. Its events have received support and participation from the Japan Mint (独立行政法人造幣局) and the National Printing Bureau (国立印刷局). A notable milestone was the Ministry of Finance's auction of released gold coins (about 30,000 pieces) held between 2005 and 2008, for which JNDA was the sole trusted issuer of appraisal certificates, entrusted by the government to appraise all the gold coins and identify their condition. The association also publishes a newsletter, 'World Banknote and Coin News' (世界の紙幣とコインの最新ニュース), and maintains a website with event schedules and member dealer listings. It has warned the public about fraudulent investment schemes misusing its name and fake certificates.

The Japan Numismatic Dealers Association was established in August 1969 (Showa 44). Its founding was driven by a surge of interest in coin collecting that followed the issuance in 1964 (Showa 39) of Japan's first commemorative coin, the Tokyo Olympics coin, which sparked a nationwide coin-collecting boom. The association was created to further promote and organize this growing hobby and trade. From its early years, JNDA has been a publisher. Its 'Japanese Coin Catalogue' has been issued annually since 1967, predating the formal establishment of the association and becoming a standard reference for the Japanese numismatic market. The association also publishes a newsletter, 'World Banknote and Coin News,' which provides updates on world coins and banknotes. Over the decades, JNDA has expanded its role as an organizer of coin events. It hosts the Tokyo International Coin Convention each spring, an event that has received backing from the Ministry of Foreign Affairs, the Agency for Cultural Affairs, and the Japanese Red Cross Society, and that features participation by mints from Japan and abroad. It also runs regional coin shows, including the Osaka Coin Show and the Nagoya Coin Show, which serve collectors and dealers in the Kansai and Chubu regions. A defining moment for the association came between 2005 and 2008 (Heisei 17–20), when the Ministry of Finance conducted auctions of released gold coins, approximately 30,000 pieces. JNDA was selected as the only trusted issuer of appraisal certificates and was commissioned by the government to appraise all the gold coins and identify their preservation states. This government mandate underscored the association's position as the country's authoritative body for coin authentication. Today, JNDA describes itself as comprising roughly 90 representative dealers nationwide, while its own history page cites about 75 members. It continues to issue what it calls Japan's only official appraisal certificates, organizes major coin fairs, and publishes catalogues and news for the numismatic community. It has also taken public stances against fraud, warning in 2025 about malicious investment schemes that misuse its name and fake certificates.

• 2025

  JNDA issues a public warning about fraudulent investment schemes misusing its name and fake certificates.

• 2008

  Ministry of Finance gold coin auctions conclude; JNDA appraises all approximately 30,000 coins.

• 2005

  Ministry of Finance auctions of released gold coins begin; JNDA serves as the sole appraisal certificate issuer.

• 1969

  Japan Numismatic Dealers Association is established in August (Showa 44).

• 1967

  The 'Japanese Coin Catalogue' begins annual publication.

• 1964

  Japan's first commemorative coin, the Tokyo Olympics coin, is issued, sparking a coin-collecting boom.

Japan's authoritative numismatic trade body and the only official issuer of coin appraisal certificates in the country.

• Appraisal certificates (鑑定書)

  Official certificates issued by JNDA's appraisal committee, described as the only official certificates in Japan, for Japanese and foreign old coins.

• Japanese Coin Catalogue (日本貨幣カタログ)

  Annual catalogue published since 1967, a standard reference for Japanese numismatics.

• World Banknote and Coin News (世界の紙幣とコインの最新ニュース)

  Association newsletter covering the latest information on world coins and banknotes.

1. 1日本貨幣商協同組合公式HPjnda.or.jp
2. 2日本貨幣商協同組合とはjnda.or.jp
3. 3Wikidata: Japan Numismatic Dealers Associationwikidata.org
4. 4日本貨幣商協同組合 - Wikipediaja.wikipedia.org