Τώρα εμφανίζεται Καμερούν - Γραμματόσημα (1930 - 1939) - 4 Γραμματόσημα.
1931
"Colonial Exhibition" Key-types Inscribed "CAMEROUN"
13. Απρίλιος WM: Κανένα Διάτρηση: 12½ x 12¼
![["Colonial Exhibition" Key-types Inscribed "CAMEROUN", τύπος J]](https://www.stampworld.com/media/catalogue/Cameroon/Postage-stamps/J-s.jpg)
![["Colonial Exhibition" Key-types Inscribed "CAMEROUN", τύπος K]](https://www.stampworld.com/media/catalogue/Cameroon/Postage-stamps/K-s.jpg)
![["Colonial Exhibition" Key-types Inscribed "CAMEROUN", τύπος L]](https://www.stampworld.com/media/catalogue/Cameroon/Postage-stamps/L-s.jpg)
![["Colonial Exhibition" Key-types Inscribed "CAMEROUN", τύπος M]](https://www.stampworld.com/media/catalogue/Cameroon/Postage-stamps/M-s.jpg)
