1st International Trade Union Conference in Prague
56%
| Country: | Vietnam |
|---|---|
| Issue: | Official stamps |
| Date: | 1958-06-26 |
| Print: | Offset and Lithography |
| Perforation: | line 12½ |
| Emission: | Official |
| Format: | Stamp |
| Face Value: | 150 Vietnamese đồng |