A major Japanese console manufacturer simultaneously distributed paid DLC 'Edo Currency Expansion' in May 2026 for three major RPG titles, incorporating Edo period monetary circulation as game mechanics. With numismatic scholars handling historical verification and implementing actual circulation logic of Kanei Tsuho, Tempo Tsuho, and Kyoho Koban into the in-game currency system, downloads exceeded 1.2 million within 24 hours of release.
May 2026: Major Japanese Console Maker Distributes Old Coin-Themed DLC for Major Titles — Three Leading RPGs Offer Historically Verified Expansion Packs Incorporating Edo Period Currency

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.