URSS
Prezentat acum: URSS - Timbre poştale (1923 - 1991) - 1 timbre.
1951
The 150th Birth Anniversary of M.V.Ostrogradsky
10. Decembrie WM: Niciunul Marimea foii: 100 Design: V. Zavyalov Perforare: 12¼
![[The 150th Birth Anniversary of M.V.Ostrogradsky, Tip AUP]](https://swmedia-4cd6.kxcdn.com/media/catalogue/USSR/Postage-stamps/AUP-s.jpg)
