Camerouns. (French Camerouns). 1942. Air Mail envelope written from France addressed to an Internee on the French cruiser "Aviso Bougainville" (Douala Interment Camp) via the Red Cross in Brazzaville (French Congo) bearing France Yvert 517, 1f50 brown (strip of three) tied by Toulon date stamp '3rd Sept', routed via Dahomey with Cotonou transit '26th Sept' and 'Controle Postal' censor label tied by oval 'Ouvert/ Par/ Controle' in blue/green and Lagos/ Nigeria '20 Oc' with 'Opened by Censor/ PC 90' tied by framed 'Crown/ Passed/ PP/ 25' in violet and Douala/ Cameroun receiver '13th Nov' with 'Controle Postal Militaire' label tied by oval 'Ouvert/Par/ L'Autorite Militaire' with circular 'Controle Postal/ Commission A/ Territoire de Cameroun' and hand-struck instructional 'Retenu Special/ Douala' in violet and m/s "Batschenga" (Internment Camp) on face.
Very rare item into Batschenga Camp.