Medal World's Columbian Exposition 1892-1893. To commemorate 400th anniversary of Discovery of America by Columbus and "to tell the story of the world's progress through those four centuries."
Variety with smaller letter in the obverse legend.
Obverse: edifice, on ribbon above, around U.S. Govt. Building, below edifice, on ribbon, Width 351 ft, to left Length 421 ft, to right Area 3.3 Acres
Reverse: in field WORLD'S / COLUMBIAN / EXPOSITION / CHICAGO / 1893; in marigne TREASURY DEPARTMENT, below all, in margine UNITED STATES MINT EXHIBITION
Diameter 37 mm, weight 25.22 g
