This 7×27 antique thermometer is a rare find for collectors of advertising memorabilia. Made in the United States in 1915, this original porcelain thermometer features a green & white Keystona brand thermometer. The vibrant color and intricate design make it a unique addition to any collection. The thermometer is missing the tube. Rust stain marks from years of being outside! Don’t miss your chance to own this piece of American history today.