Four heritage sake breweries (Gekkeikan, Ozeki, Hakutsuru, Kiku-Masamune) jointly launched the "Edo Meishu × Old Coin Set" on May 23, 2026. The limited gift set combines sake revived from Edo-period texts and price records with authentic Kanei Tsuho and Tenpo Tsuho coins. The first 2,000 sets sold out before release, attracting both collectors and sake enthusiasts.