Mathematical Clock, and Theory of Functions Diagram 50 h — Czechoslovakia, 1987
Mathematical Clock, and Theory of Functions Diagram (Czechoslovakia, 1987), face value 50 h, “125th Anniv. of Union of Czech Mathematicians and Physicists”…
- Series
- 125th Anniv. of Union of Czech Mathematicians and Physicists
- Issue date
- 1987
- Face value
- 50 h
- Colors
- Multicolor
- Print run
- 13,280,000