Lot
2851 
United States, 1933, 50¢ "Chicago" Zeppelin. Top margin block of 4 with plate number, top right stamp showing printing dot anomaly, tied by "Washington, D.C., Oct 5, 1933" first day of issue duplex postmark on airmail cover to Chicago, Ill., Very Fine and choice. Scott No. C18 Estimate $200 - 300.
Realized: $105