Cuba
| Country: | Cuba |
| Type: | Postage stamps |
| Series: | International Quiet Sun Year |
| Nominal: | 50 ¢ |
| Year: | 1965 |
| Perforation: | line 10 |
International Quiet Sun Year
 Sun and Earth´s magnetic pole 0.46$ |  Emblem 0.61$ |  Earth´s magnetic fields |  Solar rays |
 Effect of solar rays on various atmospheric layers 0.26$ |  Effect of solar rays on satellite orbits |