1940, 1. Ostmärkische PWZ show the K. D. F. Operation group of collector the Vienna New city-dweller airplane works 23.11.1940 - 7.12.1940, commemorative page 22 x 28, 5 cm, franked by Michel no. 751 / 59 and matching special cancellation from 29.11.1940, reverse rest of hinge, in perfect condition