Switzerland
Ditunjukkan sekarang: Switzerland - PBB (1950 - 1963) - 1 Setem-setem.
1963
UNCSAT - United Nations Conference on Science and Technology
4. February WM: Tiada Perforasi: 11¾
![[UNCSAT - United Nations Conference on Science and Technology, jenis I]](https://www.stampworld.com/media/catalogue/Switzerland/UN/I-s.jpg)
![[UNCSAT - United Nations Conference on Science and Technology, jenis J]](https://www.stampworld.com/media/catalogue/Switzerland/UN/J-s.jpg)
