1898, 1¢ Trans-Miss., First Day Cover. Natural s.e. at right, rich color, tied by "Omaha, Neb., Jun 17 '98" machine postmark on official Trans-Mississippi and International Exposition cachet cover from the Department of Publicity and Promotion, addressed to Chicago, Ill, Very Fine, a wonderful first day cover on a official exposition cachet cover, only five 1¢ Trans-Mississippi first day covers are recorded. Scott No. 285  Estimate $10,000 - 15,000. $0 (Image)