Lot 72543 – 1933 50c Zeppelin (C18) six covers comprising four

1933 50c Zeppelin (C18) six covers comprising four First Days with New York Oct 2, 1933 machine cancels and violet and magenta flight cachets – two of which have three examples affixed and Chicago Oct. 26 Worlds Fair backstamps and the other two have Spanish double circle backstamps, also one cover from Chicago (Oct. 26) to Green Bay via Friedrichshafen and one cover from Miami (Oct. 23) to Bryn Mawr PA via Chicago, Fine-Very Fine