01 January (China, People's Republic ) within release Scientific and technological achievements goes into circulation Se-tenant Conjecture of mathematician Goldbach face value 2*80 Chinese renminbi yuan
Se-tenant Conjecture of mathematician Goldbach in catalogues | |
---|---|
Yvert et Tellier: | Yt: CN 3752-3753 |
Se-tenant is horizontal format.
Also in the issue Scientific and technological achievements: