J. M. Petzval, J. Strouhal and V. Jarnik 50 h — Tchécoslovaquie, 1987
J. M. Petzval, J. Strouhal and V. Jarnik (Tchécoslovaquie, 1987), valeur faciale 50 h, série « 125th Anniv. of Union of Czech Mathematicians and Physicists…
- Série
- 125th Anniv. of Union of Czech Mathematicians and Physicists
- Date d’émission
- 1987
- Valeur faciale
- 50 h
- Couleurs
- Polychrome
- Tirage
- 14,940,000
- Yvert
- CS 2731
- Michel
- CS 2920
- Stanley Gibbons
- CS 2888
- Scott
- CS 2664