Three major domestic think tanks jointly released the Ancient Coin Cultural Economy White Paper 2026 in May 2026. The combined domestic ancient coin-related market—covering auctions, trading, appraisal, publishing, events, and collector goods—was estimated at approximately 930 billion yen, an 18% increase from 2025. Including ripple effects on manufacturing, tourism, and education, the total economic impact reaches 1.7 trillion yen, underscoring the rapidly growing presence of the industry as a cultural sector.