USSR
Now showing: USSR - Postage stamps (1923 - 1991) - 1 stamps.
1957
The 250th Birth Anniversary of Leonard Euler
WM: None Sheetsize: 72 Design: A. Zavyalov Perforation: 12¼ x 12
![[The 250th Birth Anniversary of Leonard Euler, type BHG]](https://swmedia-4cd6.kxcdn.com/media/catalogue/USSR/Postage-stamps/BHG-s.jpg)