The pride of the young Benin, which was originally colonial Dahomey. The blacked out labelling on the stamp from Republique du Dahomey to Benin suggests the vintage of this issue to be 1975 or just thereafter.
Also, other than the occasional freighter version, Air Afrique did not employ the B707, utilizing instead the DC-8. Given that this is a non-Afrique aircraft which is not painted in Afrique colors, perhaps this drawing was originally an Air France B707. It can only be guessed that this is a gateway Benin airfield of Cotonou or Porto-Novo.