USSR
Now showing: USSR - Postage stamps (1923 - 1991) - 1 stamps.
1957
The 6th World Youth Festival
27. July WM: None Sheetsize: 72 Design: V. Zavyalov Perforation: 12 x 12¼
![[The 6th World Youth Festival, type BIY]](https://www.stampworld.com/media/catalogue/USSR/Postage-stamps/BIY-s.jpg)
