"The ashtray was from the Chicago World's Fair and it was cast from potmetal and it said 1833-1933. It said A Century of Progress"
Poster for Chicago World's Fair 1933   
Public DomainPoster for Chicago World's Fair 1933 - Credit: United States Library of Congress

A Century of Progress International Exposition was the name of the World's Fair held in Chicago from 1933 to 1934 in celebration of the city's centennial.

The theme of the fair was technological innovation.