76/ 762 Zwart, P. [P.T.T.]. "Postvluchten Nederland-Indië (...)". Information, 1929, 29,2x35,6 cm., recto w. letterpress printed in black, verso blank.

- Vertical middle fold; tipped onto 2 attached grey paper mounts at corners (some wrinkling in corners from mounting).

= Very rare. PZ-098; Broos '68, no.37.