This original postcard is from the 1933 Century Of Progress (Chicago World's Fair) which was held in Chicago. It is in very good condition but is slightly yellowed & has slight wear and the front features "Chevrolet's Automobile Assembly Line-General Motors Building, Century of Progress". The reverse side features a postcard format, which is unused and a paragraph that says "Greetings! Am writing this from Chevrolet's display at the World's Fair where I've been watching them build Chevrolet's on a regular factory assembly line" and measures approx. 5 1/2" x 3 1/2".