Electron microscope, chemical plant 25 Pf. — Germany, Democratic Rep., 1975
Electron microscope, chemical plant (Germany, Democratic Rep., 1975), face value 25 Pf., “275th Anniversary of the Academy of Sciences in Berlin” series…
- Series
- 275th Anniversary of the Academy of Sciences in Berlin
- Issue date
- 1975
- Face value
- 25 Pf.
- Colors
- Multicolor
- Print run
- 5,000,000