Ditunjukkan sekarang: Angola - Setem-setem bayaran pos (1970 - 1979) - 1 Setem-setem.
1971
The 5th Anniversary of the Regional Soil and Foundation Engineering Conference, Luanda
22. August WM: Tiada Saiz Helaian: 50 Corak: José de Moura Ukiran: INCM Perforasi: 13½
![[The 5th Anniversary of the Regional Soil and Foundation Engineering Conference, Luanda, jenis KX]](https://www.stampworld.com/media/catalogue/Angola/Postage-stamps/KX-s.jpg)
