Elveţia
Prezentat acum: Elveţia - Timbre poştale (1849 - 2024) - 1 timbre.
1982
International Water Quality Association
23. August WM: Niciunul Marimea foii: 50 Design: Werner Muhlemann Gravură: Courvoisier. S.A. Perforare: 11¾
![[International Water Quality Association, Tip AVG]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Switzerland/Postage-stamps/AVG-s.jpg)
