国内大手食品トレーサビリティ会社が、古銭・歴史貨幣が流通した時代の伝統食材・発酵文化を体系化した「古銭×伝統食材データベース」を完成させ無償公開。全国120軒の老舗発酵蔵元と300種の伝統食材を網羅し、コインペディアとのクロスリファレンス機能で古銭の時代背景を食文化の文脈から探索できる開放型プラットフォームとして研究者・料理人・コレクターの注目を集めている。
Major Japanese Food Traceability Firm Completes Ancient Coin Culture x Traditional Ingredient Database — 120 Historic Fermentation Breweries and 300 Traditional Ingredients Nationwide, Used by Researchers and Chefs

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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.