1982
Švajčiarsko
Zobrazujú sa: Švajčiarsko - WIPO (1982 - 1985) - 1 známky.
1985
Activities of World Intellectual Property Organization - Inscription "ORGANISATION MONDIALE DE LA PROPRIÉTE INTELLECTUELLE"
10. september WM: nikto Dizajn: Roland Hirter. Perforácia: 11¾
![[Activities of World Intellectual Property Organization - Inscription "ORGANISATION MONDIALE DE LA PROPRIÉTE INTELLECTUELLE", typ E]](https://www.stampworld.com/media/catalogue/Switzerland/WIPO/E-s.jpg)
