Louisiana Purchase Exposition 1904 World's Fair Commemorative Pin

In 1904, St. Louis hosted a World's Fair to celebrate the centennial of the 1803 Louisiana Purchase. It was delayed from a planned opening in 1903 to 1904, to allow for full-scale participation by more states and foreign countries. The Fair opened April 30, 1904, and closed December 1, 1904. Of notable interest is that St. Louis had held an annual St. Louis Exposition since the 1880s as agricultural, trade, and scientific exhibitions, but this event was not held in 1904, due to the World's Fair.  This pin commemorates the St. Louis World's Fair of the 100 yar anniversary of the Lousiana Purchase.