International Philatelic Exhibition World Stamp Expo '89 in Washington, United States, commemorating the 20th Congress of the Universal Postal Union 1989
Now showing: Poland - Postage stamps - 1989 - International Philatelic Exhibition World Stamp Expo '89 in Washington, United States, commemorating the 20th Congress of the Universal Postal Union - 1 stamps.
1989
International Philatelic Exhibition World Stamp Expo '89 in Washington, United States, commemorating the 20th Congress of the Universal Postal Union
14. November WM: None Sheetsize: 50 Design: W. Andrzejewski Engraving: PWPW. Perforation: 11
![[International Philatelic Exhibition World Stamp Expo '89 in Washington, United States, commemorating the 20th Congress of the Universal Postal Union, type DBL]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/DBL-s.jpg)
