Hermann von Helmholtz (1821-1894) Physicist, Philosopher 10 Pf. — Germany, Democratic Rep., 1950
Hermann von Helmholtz (1821-1894) Physicist, Philosopher (Germany, Democratic Rep., 1950), face value 10 Pf., “250 Years Berlin Academy Of Science” series…
- Series
- 250 Years Berlin Academy Of Science
- Issue date
- 1950
- Face value
- 10 Pf.
- Colors
- Dark grey green
- Print run
- 2,000,000