V & E Coin News – 1892 Columbian Exposition Half Dollar. Image: Legend Rare Coin Auctions / CoinWeek. By Charles Morgan and Hubert Walker for CoinWeek Notes …. The 1892 Columbian Exposition Half Dollar commemorates the 400th anniversary of Christopher Columbus’s arrival in the New World and supports funding for the 1893 World’s Columbian Exposition in Chicago. Authorized by Congress, it […]