全国60店の中小コインショップが「日本古銭商協同組合（JCA）」を設立。共同仕入れによるコスト削減、共同広告によるブランド強化、在庫シェアリングによる品揃え拡充の三本柱で、大手オークションや海外バイヤーに対抗する業界再生モデルを構築する。
industry
May 2026: Small Coin Shop Cooperative Launches — 60 Nationwide Dealers Unite for Joint Purchasing and Advertising Strategy
Source: 日本古銭商協同組合（JCA）設立総会プレスリリース|Published: May 23, 202612d ago
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Dealers Handling This Category
A reference when considering a sale or appraisal. All are dealers and auction houses with a proven track record.
Auction House
Ginza Coins
Ginza, Chuo-ku, Tokyo
One of Japan's most established numismatic dealers. The scale and variety of their regular auctions is among the largest in the country. Their catalogs are considered a benchmark for market pricing.
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Japan Coin Auction (JCA)
Tokyo
Holds regular auctions with reliable hammer price data, making it a useful resource for tracking market values. Caters to a wide range of collectors from beginners to advanced buyers.
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Taisei Coins
Tokyo
A dealer with an international network. Offers advanced services such as consignment to overseas auctions and NGC/PCGS grading submission. Recommended for high-value or internationally recognized coins.