Montre maintenant: Suisse - SDN (1922 - 1944) - 8 Timbres-poste.
1938
International Labour Organization - Switzerland Postage Stamps of 1938 Overprinted "SOCIÉTÉ - DES - NATIONS"
2. mai WM: Aucun Perforation: 11¾
1938
International Labour Organization - Switzerland Postage Stamps of 1938 Overprinted "SERVICE DE LA SOCIÉTÉ DES NATIONS"
septembre WM: Aucun Perforation: 11¾