Friday, January 1, 1999 China, People's Republic will issue: Se-tenant "Conjecture of mathematician Goldbach" face value 2*80, Se-tenant "Fossils of the early Cambrian" face value 2*80,
| Country: | China, People's Republic |
|---|---|
| Issue: | Scientific and technological achievements |
| Date: | 1999-01-01 |
| Size: | 140 x 95 |
| Perforation: | 12 |
| Emission: | Commemorative |
| Format: | Se-tenant |
| Face Value: | 2*80 Chinese renminbi yuan |
| Country: | China, People's Republic |
|---|---|
| Issue: | Scientific and technological achievements |
| Date: | 1999-01-01 |
| Size: | 140 x 95 |
| Perforation: | 12 |
| Emission: | Commemorative |
| Format: | Se-tenant |
| Face Value: | 2*80 Chinese renminbi yuan |