京都大学精密工学研究室発のスタートアップ「SurfaCoin」が、構造化光投影と深層学習を組み合わせた古銭専用表面分析装置「SurfaScope S1」を発表。1枚あたり平均0.8秒で表面3Dマップを生成し、偽物・加工品の判定精度98%を達成。2026年内に商用モデルを国内ディーラー・オークションハウス向けに展開する。
May 2026: Kyoto University Spin-off 'SurfaCoin' Achieves Sub-Second 3D Surface Analysis of Old Coins with 98% Counterfeit Detection Accuracy

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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.