This original postcard is from the 1933 Century Of Progress (Chicago World's Fair) which was held in Chicago. It is in good condition and the front features the Gulf Exhibit, Chicago World's Fair. The reverse side features a postcard format, which is unused and a paragraph that says At the Gulf Exhibit will be found the World's Largest Auto Cylinder, a reproduction of the World's largest Atmospheric Vaccuum Still, the Airplane Motor that set the World's Endurance Record, and many other things of interest and measures approx. 5 1/2 x 3 1/2.