Visar nu: Schweiz - WHO (1960 - 1969) - 4 frimärken.
1960
World Health Organization Emblem - Inscription "ORGANISATION - MONDIALE - DE LA SANTÉ"
24. oktober WM: Inga Perforering: 11¾
1962
Fight Against Malaria - WHO Stamp of 1960 Overprinted "ERADICATION DU PALUDISME"
19. mars WM: Inga Perforering: 11¾