Ditunjukkan sekarang: Switzerland - ILO (1923 - 1994) - 3 Setem-setem.
1975
People at Work
13. February WM: Tiada Corak: Hans Erni. Ukiran: Courvoisier. S.A. Perforasi: 11¾
![[People at Work, jenis Q]](https://www.stampworld.com/media/catalogue/Switzerland/ILO/Q-s.jpg)
![[People at Work, jenis R]](https://www.stampworld.com/media/catalogue/Switzerland/ILO/R-s.jpg)
![[People at Work, jenis S]](https://www.stampworld.com/media/catalogue/Switzerland/ILO/S-s.jpg)
