AUSTRIA, 1930 Catapult flight covers, two covers, Graue nos. K39 AU and K53 AU, K39 with trivial creases but both still Very Fine (Image)

CV. 120

POLAND, Sieger 157B, 1932 4th South America Flight, Poland 15g postal card uprated with C7 and C9(8), "WARSZAWA" April 26, 1932 cds, red flight cachet and special cancellation for connecting flight in Berlin, Very Fine, a scarce card (Image)

CV. 250

POLAND, Sieger 406D, 1936 1st North American Flight, franked with Poland 294, 299, and 303(2), "WARSZAWA" May 2, 1936 cds, dispatched from Frankfurt (d), New York arrival markings on reverse, Very Fine, a clean and attractive cover (Image)

CV. 150