Rāda: Šveice - UN (1960 - 1963) - 2 marka.
1963
UNCSAT - United Nations Conference on Science and Technology
4. februāris SV: Neviens Perforēšana: 11¾
![[UNCSAT - United Nations Conference on Science and Technology, veids I]](https://www.stampworld.com/media/catalogue/Switzerland/UN/I-s.jpg)
![[UNCSAT - United Nations Conference on Science and Technology, veids J]](https://www.stampworld.com/media/catalogue/Switzerland/UN/J-s.jpg)
