The 20th Anniversary of UNESCO 1966
Now showing: Czechoslovakia - Postage stamps - 1966 - The 20th Anniversary of UNESCO - 1 stamps.
1966
The 20th Anniversary of UNESCO
25. April WM: None Design: J. Šváb Engraving: B. Housa Perforation: 11¾
![[The 20th Anniversary of UNESCO, type ANV]](https://www.stampworld.com/media/catalogue/Czechoslovakia/Postage-stamps/ANV-s.jpg)