International Philatelic Exhibition World Stamp Expo '89 in Washington, United States, commemorating the 20th Congress of the Universal Postal Union 1989
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1989
International Philatelic Exhibition World Stamp Expo '89 in Washington, United States, commemorating the 20th Congress of the Universal Postal Union
14. november WM: Inga storlek på arket: 50 Design: W. Andrzejewski Gravyr: PWPW. Perforering: 11
![[International Philatelic Exhibition World Stamp Expo '89 in Washington, United States, commemorating the 20th Congress of the Universal Postal Union, Typ DBL]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/DBL-s.jpg)
