Czechoslovakia
0.11 - 0.13$
price on 06.12.2022
| Country: | Czechoslovakia |
| Type: | Postage stamps |
| Series: | International Geophysical Year |
| Nominal: | 30 h |
| Year: | 1957 |
| Size: | 33 x 27 mm |
| Perforation: | comb 11½ x 11¼ |
| Mintage: | 4,430,000 |
International Geophysical Year
 Radio Telescope and Observatory 0.11$ |  Meteorological Station in High Tatra 0.13$ |  Sputnik 2 over Earth 0.22$ |