2026年5月、国内主要古銭ディーラー・オークションハウス・鑑定機関20社が「日本古銭業界協議会（JCA）」を設立。真贋基準の統一、価格透明化、海外展開支援の3本柱で市場のインフラ整備を本格化する。
業界動向
Japanese Old Coin Industry Coalition: 20 Major Players Launch Integrated Trade Council
Source: ITTENDO Editorial|Published: May 24, 202611d 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.
Auction House
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.
Auction House
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.