The 150th Anniversary of the Birth of Heinrich von Stephan, Founder of U.P.U. - Issues of 1979 Overprinted "1831-1981 Von Stephan 330" and Surcharged 1981
Ora in esposizione: Guyana - Francobolli postali - 1981 - The 150th Anniversary of the Birth of Heinrich von Stephan, Founder of U.P.U. - Issues of 1979 Overprinted "1831-1981 Von Stephan 330" and Surcharged - 1 francobolli.
![[The 150th Anniversary of the Birth of Heinrich von Stephan, Founder of U.P.U. - Issues of 1979 Overprinted "1831-1981 Von Stephan 330" and Surcharged, Scrivi KY]](https://www.stampworld.com/media/catalogue/Guyana/Postage-stamps/KY-s.jpg)
