The 13th International Astronomic Union Congress, Prague 1967
Now showing: Czechoslovakia - Postage stamps - 1967 - The 13th International Astronomic Union Congress, Prague - 1 stamps.
1967
The 13th International Astronomic Union Congress, Prague
21. August WM: None Design: J. Lukavský Engraving: L. Jirka Perforation: 11¾
![[The 13th International Astronomic Union Congress, Prague, type ARW]](https://www.stampworld.com/media/catalogue/Czechoslovakia/Postage-stamps/ARW-s.jpg)
