Three-Piece Set of 1892-1893 Worlds Columbian Exposition Souvenir Medals. Columbus and Chart / Exposition View. 50.5 mm. Eglit-55.Set of all three metallic compositions: white metal, Rulau-B6, About Uncirculated; bronze, Rulau-B6A, Mint State; and Aluminum, Rulau-B6B, About Uncirculated.