Švajčiarsko
Zobrazujú sa: Švajčiarsko - UN (1950 - 1963) - 1 známky.
1963
UNCSAT - United Nations Conference on Science and Technology
4. február WM: nikto Perforácia: 11¾
![[UNCSAT - United Nations Conference on Science and Technology, typ I]](https://www.stampworld.com/media/catalogue/Switzerland/UN/I-s.jpg)
![[UNCSAT - United Nations Conference on Science and Technology, typ J]](https://www.stampworld.com/media/catalogue/Switzerland/UN/J-s.jpg)
