Tsjecho-Slowakije
Wordt nu getoond: Tsjecho-Slowakije - Postzegels (1918 - 1992) - 1 postzegels.
1987
The 125th Anniversary of Union of Czech Mathematicians and Physicists
6. juli WM: Geen Ontwerp: J. Hamza Graveren: vedi francobollo Perforatie: 11ΒΌ x 12
![[The 125th Anniversary of Union of Czech Mathematicians and Physicists, type CLX]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Czechoslovakia/Postage-stamps/CLX-s.jpg)
![[The 125th Anniversary of Union of Czech Mathematicians and Physicists, type CLY]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Czechoslovakia/Postage-stamps/CLY-s.jpg)
![[The 125th Anniversary of Union of Czech Mathematicians and Physicists, type CLZ]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Czechoslovakia/Postage-stamps/CLZ-s.jpg)
