国内最大手の電子チケット販売サービスが古銭・貨幣文化イベントに特化した専門ポータル「KosenTicket HOME」を開設し、ローンチ初月で月間500万PVを突破した。全国150団体が参加する業界横断のレコメンドエンジンがコレクターと古銭イベントをつなぎ、イベント市場のオンライン化・広域化に向けた新たなインフラが誕生した。
Major Japanese E-Ticket Service Launches Dedicated Old Coin Event Hub — Cross-Industry Recommendation Engine Drives 5 Million Monthly Page Views

ITTENDO tracks auction records and market charts so you always know the current value of Japanese antique coins. Add coins to your Vault to stay on top of price changes.
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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.
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.
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.
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.