1948 (1 Feb) registered cover from Lodz to London, franked on both sides with 50zl Air Post surcharge, showing a partial ghost overprint due to a shift of printing plate (Fi.442b), commemorative 20zl (Fi.440) on back, filing fold away from the stamps fine, with Korszen certificate (cover is addressed to Arthur Silverstone, assistant general sales manager for 20th Century Fox. He was in the film industry for 35 years and had been with United Artists in England before working for Fox) (Image)

Est.US$150

1948 (7 Jan) registered and flown cover (backflap missing) from Starachowice Wierznik to Chicago, franked with 3x50zl Poczta Lotnicza (top stamp "Lofnicza" variety, (Fi/442b) and single 10zl gray violet, tied by departure pmks, one repeated on back, with Chicago (Jan 11) arrival, minor perf. flaws and filing fold away from the stamps, fine cover with Korszen certificate (detailing additional plate flaws in the overprinted stamps) (Image)

Est.US$150

1948 (28 Jan) flown cover from Poznan to Chicago (addressed to Joseph Bieniecki, well known stamp dealer), franked with 50zl surcharge on light red 25kr (Fi.442c, 4,000zl+), additional 6zl stamp added but not canceled on reverse, v.f., rare cover (Image)

Est.US$1,500