Airmail, 1933, 50¢ "Chicago" Zeppelin, Miami-Chicago-Sevilla. Neat cover with "Miami Oct 23 1933" machine cancel tying 50¢ Chicago Zeppelin, with purple flight cachet with "Dispatched From Miami", addressed to Sevilla, Spain; with Chicago & Sevilla receivers on reverse, stamp with a few soiled perfs does not detract, said to be very scarce usage, Very Fine. Sieger No. 242A. Scott No. C18  Estimate $300 - 400. $0 (Image)