Wednesday, June 9, 1971 Soviet Union, USSR will issue: Stamp "13th International Science History Congress" face value 6, Stamp "International Congresses in Moscow." face value 6,
| Country: | Soviet Union, USSR |
|---|---|
| Issue: | International Congresses and Assemblies |
| Date: | 1971-06-09 |
| Print: | Photogravure |
| Size: | 40 x 28 |
| Perforation: | frame 11½ |
| Format: | Stamp |
| Face Value: | 6 Russian kopek |
| Print run: | 4000000 |
| Country: | Soviet Union, USSR |
|---|---|
| Issue: | International Congresses and Assemblies |
| Date: | 1971-06-09 |
| Print: | Photogravure |
| Size: | 40 x 28 |
| Perforation: | frame 11½ |
| Format: | Stamp |
| Face Value: | 6 Russian kopek |
| Print run: | 4000000 |