1974 General Time Watches and Clocks Ad - SiO2

This is a 1974 ad for a General Time Watches and Clocks! The size of the ad is approximately 8.5x11inches. The caption for this ad is 'SiO2 The secret formula that shook the Alps' The ad is in great condition. This vintage ad would look great framed and displayed! Add it to your collecction today!