Tšekkoslovakia
Näytetään: Tšekkoslovakia - Postimaksumerkit (1918 - 1992) - 1 postimerkit.
1987
The 125th Anniversary of Union of Czech Mathematicians and Physicists
6. heinäkuu VM: Ei mitään Design: J. Hamza Kaiverrus: vedi francobollo Perforaatio: 11¼ x 12
![[The 125th Anniversary of Union of Czech Mathematicians and Physicists, tyyppi CLX]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Czechoslovakia/Postage-stamps/CLX-s.jpg)
![[The 125th Anniversary of Union of Czech Mathematicians and Physicists, tyyppi CLY]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Czechoslovakia/Postage-stamps/CLY-s.jpg)
![[The 125th Anniversary of Union of Czech Mathematicians and Physicists, tyyppi CLZ]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Czechoslovakia/Postage-stamps/CLZ-s.jpg)
