Czechoslovakia
Now showing: Czechoslovakia - Postage stamps (1918 - 1992) - 1 stamps.
1957
The 4th World T.U.C., Leipzig
28. September WM: None Design: V. Polášek Engraving: J. Mráček Perforation: 11½
![[The 4th World T.U.C., Leipzig, type RT]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Czechoslovakia/Postage-stamps/RT-s.jpg)
