ハーバード大学とオックスフォード大学から日本古錢専門の著名研究者が9月より国内3大学へ常駐。国際共同研究、英語圏への情報発信強化、若手研究者の育成が一体的に進む。日本貨幣史研究の「国際標準化」が本格始動する。
May 2026: Japanese Old Coin Overseas Visiting Researchers — Prominent Scholars from Harvard and Oxford Arriving in Japan, Stationed at Domestic Universities from September

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.
Free Appraisal
Get your old coins appraised — free of charge
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.
Request a free appraisalDealers
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.