1892 Columbian Old Commem Half Dollar 50c Grades Select Unc. The Columbus Half Dollar along with the Isabella Quarter were Minted in Honor of the 400th Anniversary of Columbus' Voyage to the New World. It was First Distributed at the Worlds Fair Honoring that Voyage. When Examining a Columbian Exposition Half Dollar, the First Points to Show Wear are Columbus’ Eyebrow, Cheek and the Hair Behind his Forehead and Jaw. On the Reverse, Check the Foresail and Sainsail, as well as the Right Side of the Eastern Hemisphere.