URSS
Prezentat acum: URSS - Timbre poştale (1923 - 1991) - 1 timbre.
1986
UNESCO "Man and Biosphere" Programme
19. Mai WM: Niciunul Marimea foii: 50 Design: Yury Artsimenev Perforare: 11½
![[UNESCO "Man and Biosphere" Programme, Tip GSN]](https://swmedia-4cd6.kxcdn.com/media/catalogue/USSR/Postage-stamps/GSN-s.jpg)