Visar nu: Schweiz - ITU (1970 - 1979) - 1 frimärken.
1973
ITU Headquarters, Geneva
30. augusti WM: Inga Design: Alfred Cserno y Jean - Jacques Chevalley. Gravyr: Courvoisier. S.A. Perforering: 11¾
![[ITU Headquarters, Geneva, Typ C]](https://www.stampworld.com/media/catalogue/Switzerland/ITU/C-s.jpg)
