Vietnam
| Country: | Vietnam |
| Type: | Postage stamps |
| Series: | 10th World Telecommunications Day |
| Nominal: | 12 Vietnamese xu |
| Year: | 1978 |
| Size: | 30 x 40 mm |
| Perforation: | line 11 |
10th World Telecommunications Day
 10th World Telecommunications Day |  10th World Telecommunications Day |