Poland 1921 // 1929 Two Airmail covers: Cover with the 2 Aero-Targ Air Post Stamps  with T.A.B.R.O.M.I.K. advert label Poznan Trade Fair 1921.  and genuine Aerotarg cancels in dark red, Poznan 1' June 6 21. cover addressed to Warsaw.airmail cover from Warsaw Poland to Tchécoslovaquie mixed franking of 140 G. incl 1925 airmail stamps 45 G.  (1925 - Sc. #C9)  & 10 G.  (1925 - Sc. #C5)  posted May 14 with arrival the following day.