This is an old, valuable Prestone Antifreeze porcelain thermometer. The thermometer is made from metal and coated in porcelain. The thermometer reading go from -60 degrees Fahrenheit to 120 degrees Fahrenheit. It has mounting holes at the top and bottom. The top has a blue hexagon, with the white text reading, “Prestone / Anti-freeze.” The bottom of the thermometer has a red oval with the words, ‘You’re Set / Safe / Sure” in white.