国内大手電力小売「グリーンエナジーパートナーズ」が、古銭文化施設・専門店向けの太陽光発電オフグリッドパッケージを発表。農村部の遺跡博物館や温度湿度管理が必要な収蔵品保全設備に安定電力を供給し、業界の電力サステナビリティ強化と運営コスト削減を同時に実現する。
Major Domestic Electric Power Retailer Announces Solar Energy Package for Antique Coin Cultural Experience Facilities — Off-Grid Compatibility Supports Rural Museums and Historic Site Preservation, Strengthening Industry Energy Sustainability

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.