This listing is for a vintage paper advertisement. This is a 1966 ad for a GM Parts: Thermostat! The size of the ad is approximately 5x7.5inches. The caption for this ad is 'This is a GM original: It helps warm up your engine. This is a GM replacement: It's just as helpful' The ad is in great condition. This vintage ad would look great framed and displayed! Add it to your collection today!