Zobrazujú sa: Prieplavová zóna - Poštové známky (1940 - 1949) - 1 známky.
1948
The 25th Anniversary of Establishment of Canal Zone Biological Area
17. apríl WM: nikto Perforácia: 11
![[The 25th Anniversary of Establishment of Canal Zone Biological Area, typ BF]](https://www.stampworld.com/media/catalogue/Canal-Zone/Postage-stamps/BF-s.jpg)
