25th Anniv. of Research Institue of Posts and Telecommunicat
3,500 ₫ 1991
Вьетнам
Individual stamp from souvenir sheet.
Not listed separately by Sg or Sn
Not listed separately by Sg or Sn
| Страна: | Вьетнам |
| Тип: | Почтовые марки |
| Серия: | Research Institue of Posts and Telecommunications |
| Номинал: | 3,500 ₫ |
| Год: | 1991 |
| Перфорация: | 13 |
Research Institue of Posts and Telecommunications
 Telecommunications Network's Digitalization |  25th Anniv. of Research Institue of Posts and Telecommunicat |