Worlds Fair Station/Oct. 30, 1893/Chicago. (Columbus Day) machine cancel (Bomar C93-12A) on complete set of 1¢-10¢ Columbian Postal entires additionally franked with 3¢-6¢ Columbian adhesives, entires with pre-printed publicity for Columbus Day showing Columbian Half Dollar Commemorative Coin, these covers were prepared and serviced by "J.A. Pierce", Extremely Fine, a lovely set. Estimate  $500 - 750. $0 (Image)