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AIR MAIL - 50c BLACK GREY - AUSTRIAN PAPER - WITH OVERPRINT ZEPPELIN 1st FLIGHT OF 1930, BLUE - WITH SAMPLE OVERPRINT IN BLACK
1p. BLUE AND RED. SURCHARGE ZEPPELIN 1930, BLUE. AUSTRIAN PAPER WITH SWITCHING WATERMARK PARALLEL TO SMALLEST SIDE. THE NORMAL STAMP WAS PRINTED IN ENGLISH PAPER. VERY STRANGE IN AUSTRIAN PAPER!!!
G.J. 662(A)