Vietnam
| Country: | Vietnam |
| Type: | Postage stamps |
| Series: | Int'l. Stamp exhibition PHILASERDICA '79, Sofia |
| Nominal: | 30 Vietnamese xu |
| Year: | 1979 |
| Size: | 38 x 30 mm |
| Perforation: | line 12 |
Int'l. Stamp exhibition PHILASERDICA '79, Sofia
 Philaserdica emblem 0.06$ |  Philaserdica emblem |