Zobrazujú sa: Švajčiarsko - ITU (1970 - 1979) - 1 známky.
1973
ITU Headquarters, Geneva
30. august WM: nikto Dizajn: Alfred Cserno y Jean - Jacques Chevalley. Rytina: Courvoisier. S.A. Perforácia: 11¾
![[ITU Headquarters, Geneva, typ C]](https://www.stampworld.com/media/catalogue/Switzerland/ITU/C-s.jpg)
