Description
Full color 9 3/4″ x 13 1/2″ ad for the AC Fire-Ring Spark Plugs. In this ad, the words hot tip are written across the top 2/3 of the ad using an AC Spark Plug as the letter i. It then says that “AC Spark Plug’s Self-Cleaning Hot Tip Insulator burns away fouling deposits as you drive…helps boost pep and power in your engine. Next time you change, power up with self-cleaning AC Fire-Ring Spark Plugs“.
Source: January 14, 1966 Life magazine.
