Swiss
Menampilkan: Swiss - PBB (1950 - 1963) - 1 prangko.
1963
UNCSAT - United Nations Conference on Science and Technology
4. Februari WM: Tiada Perforasi: 11¾
![[UNCSAT - United Nations Conference on Science and Technology, Tipe I]](https://www.stampworld.com/media/catalogue/Switzerland/UN/I-s.jpg)
![[UNCSAT - United Nations Conference on Science and Technology, Tipe J]](https://www.stampworld.com/media/catalogue/Switzerland/UN/J-s.jpg)
