The international division of a major Japanese publishing agent simultaneously released 8 key books on Japanese ancient coins and monetary history in 9 languages — English, Simplified Chinese, Traditional Chinese, Korean, French, German, Spanish, Arabic, and Portuguese — in May 2026. This simultaneous global release marks the first such attempt in the history of domestic coin publishing, with combined overseas sales exceeding 24,000 copies within three weeks of release. The number of translated publications has grown more than fourfold compared to 2025, reflecting growing international academic and investment interest in Japanese ancient coins.