This listing is for a vintage paper advertisement. This is a 1958 ad for a Champion Spark Plugs with HO 4S-3G Sikorsky! The size of the ad is approximately 5x7.5inches. The caption for this ad is 'Why do more aircraft the world over use Champions than any other spark plug' The ad is in good overall condition, with some wear / staining. This vintage ad would look great framed and displayed! Add it to your collection today!