A Keicho Ichibuban gold coin — one of the most historically significant gold denominations of early Edo-period Japan — sold for $48,000 (buyer's premium included) at Heritage Auctions' May 2026 World & Ancient Coins Signature® Sale, far exceeding the pre-sale estimate of $22,000–$28,000. The PCGS AU-58-certified coin, believed to originate from a Japanese private collection consigned through an overseas dealer in 2024, attracted intense bidding from North American and European collectors. The result underscores a structural expansion in overseas appetite for Japanese numismatic gold, driven by yen weakness, growing trust in PCGS-certified Japanese coins, and rising global awareness of Edo-period monetary heritage.