Cehoslovacia
Prezentat acum: Cehoslovacia - Timbre poştale (1918 - 1992) - 1 timbre.
1965
IUPAC - Macromolecular Symposium,Prague
20. August WM: Niciunul Design: J. Fišer Gravură: J. Herčík Perforare: 11½
![[IUPAC - Macromolecular Symposium,Prague, Tip ALX]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Czechoslovakia/Postage-stamps/ALX-s.jpg)