This is a vintage Icy-Hot brand metal picnic cooler/ice chest, manufactured by The American Thermos Bottle Co. Later King-Seeley Thermos Co. Estimated Era? Circa: Late 1940s – 1950s? Key Details: Features the signature clover/four-leaf style “Icy-Hot” front emblem, grey/silver hammer-tone lid, side drain cap, heavy-duty latch, and galvanized interior metal lining.