| naam / name |
periode / period |
land / country |
afbeelding / illustration |
|
|
|
|
|
|
| State Printers, Budapest |
1907 |
|
|
|
|
02.08.1907 |
Bulgaria |
 |
|
| GOZNAK, State Printers Moskwa |
1929-196x |
|
|
|
|
xx.05.1931 |
USSR: Luchtschepen / Zeppelins |
 |
|
|
18.07.1931 |
USSR: Poolvlucht / Polar Flight Graf Zeppelin |
 |
|
|
xx.05.1932 |
USSR: Expresse zegels / Express Stamps |
 |
|
|
26.08.1932 |
USSR: Internationaal Pooljaar / International Polar Year |
 |
|
|
|
|
|
|
