Vietnam
Inscribed “SƯ VỤ” above value.
| Country: | Vietnam |
| Type: | Postage stamps |
| Series: | The 4th World Trade Union Congress, Leipzig |
| Nominal: | 100 ₫ |
| Year: | 1957 |
| Size: | 37 x 26 mm |
| Perforation: | line 12½ |
The 4th World Trade Union Congress, Leipzig
 Emblem of Congress |  Emblem of Congress |  Emblem of Congress |  Emblem of Congress |
 Emblem of Congress |