1876 Centennial International Exhibition. Black & white illustration of the Exhibition Building on a cover to Columbus, Ohio, with matching illustrated letterhead and ad card for the Main Building at the Exhibition, franked with 3¢ Bank Note with segmented cancel & Expo. Station "Centennial/Philada, Pa." cds alongside, Very Fine, a one in a million cover. Scott No. 158  Estimate $200 - 300. $0 (Image)