Τώρα εμφανίζεται Σιέρα Λεόνε - Γραμματόσημα (1970 - 1979) - 6 Γραμματόσημα.
14. Ιανουάριος WM: Κανένα Διάτρηση: 13½
![[The 10th Anniversary of African Development Bank, τύπος ED]](https://www.stampworld.com/media/catalogue/Sierra-Leone/Postage-stamps/ED-s.jpg)
![[The 10th Anniversary of African Development Bank, τύπος ED1]](https://www.stampworld.com/media/catalogue/Sierra-Leone/Postage-stamps/ED1-s.jpg)
25. Αύγουστος WM: Κανένα Διάτρηση: 13 x 13½
![[The 70th Anniversary of the Birth of President Siaka Stevens, 1905-1988 and New Congo Bridge Opening, τύπος EE]](https://www.stampworld.com/media/catalogue/Sierra-Leone/Postage-stamps/EE-s.jpg)
![[The 70th Anniversary of the Birth of President Siaka Stevens, 1905-1988 and New Congo Bridge Opening, τύπος EE1]](https://www.stampworld.com/media/catalogue/Sierra-Leone/Postage-stamps/EE1-s.jpg)
3. Οκτώβριος WM: Κανένα Διάτρηση: 13 x 13½
![[The 1st Anniversary of Mano River Union, τύπος EF]](https://www.stampworld.com/media/catalogue/Sierra-Leone/Postage-stamps/EF-s.jpg)
![[The 1st Anniversary of Mano River Union, τύπος EF1]](https://www.stampworld.com/media/catalogue/Sierra-Leone/Postage-stamps/EF1-s.jpg)
