Lot no. 6677

POSTAL TAX AIR POST STAMPS: 1930, very interesting and highly specialized collection on album pages, with perforated and imperforated multiples, partially perforated multiples, several blocks of four with inverted surcharge, 8c. block and rose, block of four without surcharge and one tête-bêche pair, 5c.+5c. block of four with inverted surcharge and one tête-bêche pair, partially perforated (Scott RAC4c), two tête-bêche pairs with inverted surcharge and partially missing "5", overprint offset on reverse, also three registered covers with this scarce issue etc., some signed, mostly good quality, very difficult to get together in this form