Poland
Now showing: Poland - Postage stamps (1860 - 2024) - 1 stamps.
1977
Congress for World Peace in Warsaw
6. May WM: None Sheetsize: 30 Design: W. Freudenreich Perforation: 11:11½
![[Congress for World Peace in Warsaw, type CAO]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Poland/Postage-stamps/CAO-s.jpg)