Vietnam
| Country: | Vietnam |
| Type: | Postage stamps |
| Series: | Flights of Vostok 3 and 4 |
| Nominal: | 20 Vietnamese xu |
| Year: | 1962 |
| Perforation: | line 11 |
Flights of Vostok 3 and 4
 Vostok III and IV |  Vostok III and IV |  Vostok III and IV |