| AUSTRIA | 1928 (21 May). First Flight. Salzburg/Zurich. Franked envelope. Corner mark is copied mark. |
U$ | 35 |
Copyright © 2000-2010 - Philaton.com
| AUSTRIA | 1928 (21 May). First Flight. Salzburg/Zurich. Franked envelope. Corner mark is copied mark. |
U$ | 35 |
Copyright © 2000-2010 - Philaton.com