In May 2026, several overseas private banks including Swiss and Singapore-based institutions have formally added Japanese old coin portfolio management to their standard product lineups. Against the backdrop of growing demand for diversified alternative investments among high-net-worth individuals, comprehensive schemes combining valuation, custody, and brokerage services for coin portfolios have been established, accelerating the asset class status of collectibles in international markets.
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Overseas Private Banking Launches Coin Portfolio Management Service — Japanese Old Coins Formally Added as Core Product for International HNW Clients
Source: ittendou 編集部|Published: May 23, 202611d ago
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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.
Auction House
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.
Auction House
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.
Auction House
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.