Poland
Now showing: Poland - Postage stamps (1860 - 2024) - 1 stamps.
1973
Second Congress for Polish Science in Warsaw
26. June WM: None Sheetsize: 30 Design: R. Dudzicki Engraving: PWPW. Perforation: 11¾:11½
![[Second Congress for Polish Science in Warsaw, type BRD]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Poland/Postage-stamps/BRD-s.jpg)