Czechoslovakia
Now showing: Czechoslovakia - Postage stamps (1918 - 1992) - 1 stamps.
1963
Technical and Scientific Knowledge Society Congress
12. December WM: None Design: J. Lukavský Engraving: J. Švengsbír Perforation: 11½ x 12
![[Technical and Scientific Knowledge Society Congress, type AHC]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Czechoslovakia/Postage-stamps/AHC-s.jpg)
