1918 (16 Mar) flown cover with Austrian franking (C1-3, etc.), Krakow to Vienna, with arrival pmk, filing fold away from the stamps, fine (Image)

Est.$100

1925 (14 Feb) Warszawa-Bucharest and Lwow-Bucharest first flight covers, each with appropriate markings, album page adhesions on back, otherwise fine-v.f. (Image)

Est.$150

1926 (22 May) Orlinski first flight to Tokyo, with special 5zl adhesive (upper left sheet corner margin single) and ordinary franking, some toning, mostly on the top margin, with Tokyo arrival pmk (Image)

Est.$150

1926 (19 Oct) Balloon flight card with 1zl adhesive, used with 5gr franking on "Balon Warszawa", with appropriate cachet, v.f. (Image)

Est.$150

1928 (30 Mar) first flight cover from Warszawa to Lwow, with large specially prepared label, with arrival pmk (Image)

Est.$150

1928 (30 Sep) Balloon mail, "Balon Lwow" registered cover from Siniawka to Warszawa with imperforate 1zl LOPP label, cover with minor abrasions away from the stamps, fine (Image)

Est.$250

1929 (1 June) first flight Bydgoszcz to Gdansk, with appropriate cachet, fine (Image)

Est.$100

1934-39 Balloon flights, five covers or cards, including 1934 and 1936 Gordon Bennett, one with a special label addressed to Stryj, another to Katowice, L.O.P.P. 10gr label on card "Poczta Balonowa do Krakowa", another "Balon Sanok" card to Skole, plus "Balon Lodz" card from Moscice to Tarnawka, fine-v.f. (Image)

Est.$200

1935 (17 May) picture postcard flown from Bialosliwie to Warszawa, franked with 10gr L.O.P.P. label, "Poczta Balonowa" and "Balon Legjonowo" handstamp, v.f. (Image)

Est.$100

1956-64 collection of 40 covers, first flights (28) and Ballon mail (12), variety of destinations and frankings, many with the colorful specially issued labels, v.f. (Image)

Est.$150