Швейцария
Сега показвам: Швейцария - ОН (1950 - 1963) - 1 марки.
1963
UNCSAT - United Nations Conference on Science and Technology
4. Февруари воден знак: Никой Пробиване: 11¾
![[UNCSAT - United Nations Conference on Science and Technology, тип I]](https://www.stampworld.com/media/catalogue/Switzerland/UN/I-s.jpg)
![[UNCSAT - United Nations Conference on Science and Technology, тип J]](https://www.stampworld.com/media/catalogue/Switzerland/UN/J-s.jpg)
