Stratosphere Balloon "USSR-1"
10 k 1933
USSR
The balloon reached record height of 19,000m.
Crew: Georgy A. Prokofiev (1902-1939), Konstantin D. Godunov (1892-1965), Ernst Birnbaum (1894-1965)
Crew: Georgy A. Prokofiev (1902-1939), Konstantin D. Godunov (1892-1965), Ernst Birnbaum (1894-1965)
| Country: | USSR |
| Type: | Postage stamps |
| Series: | Air Mail. Stratosphere balloon flight (September 30, 1933) |
| Nominal: | 10 k |
| Year: | 1933 |
| Size: | 26 x 51 mm |
| Perforation: | line 14 |
| Mintage: | 100,000 |
Air Mail. Stratosphere balloon flight (September 30, 1933)
 Stratosphere Balloon "USSR-1" 17$ |  Stratosphere Balloon "USSR-1" |  Stratosphere Balloon "USSR-1" 15$ |