古銭・古美術品の国際輸送に特化した「日本古美術国際物流DXコンソーシアム(JALDXC)」が2026年5月に発足。ブロックチェーンで真贋・所有権をトークン証明し、IoTスマートキットで輸送中の温湿度・衝撃・位置をリアルタイム監視。文化庁との輸出許可効率化協議も進み、年間78億円規模の海外取引における信頼コストの大幅削減と市場価格の押し上げが期待されている。
May 2026 Japanese Old Coins: International Logistics DX Consortium Launched — Blockchain + IoT End-to-End Tracking for Old Coin and Antique Shipments

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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Edo-era silver, koban, commemorative medals, foreign coins and more — just upload a photo. Our specialists reply with an estimated valuation by email within 2–3 business days.
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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.