Zobrazujú sa: Spojené štáty - Poštové známky (1847 - 2017) - 6084 známky.
20. apríl WM: nikto Dizajn: H. T. Wybrandi - Raue. Rytina: Bureau of Engraving & Printing. Perforácia: 11
![[The 200th Anniversary of Diplomatic Relations between USA & The Netherlands, typ BBN]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/BBN-s.jpg)
21. apríl WM: nikto Dizajn: Bradbury Thompson. Rytina: Bureau of Engraving & Printing. Perforácia: 11
![[Library of Congress, typ BBO]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/BBO-s.jpg)
27. apríl WM: nikto Dizajn: A. Saavedra, J. Boyd y J. Creamer. Rytina: Bureau of Engraving & Printing. Perforácia: 10 vertical
![[Consumer Education - Coil stamp, typ BBP]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/BBP-s.jpg)
