Camerouns. 1942. Stamp-less Official mail envelope headed 'O.S. ) Service Official) addressed to Bouea, British Camerouns cancelled by Nkongsama date stamp '14th Mai 42' with circular 'Circonscription de N' Kongsamba/ Cameroun' on face and reverse, routed via Nigeria with framed horseshoe 'Censor' in red and 'Victoria/ Cameroons/ Under British Mandate' double ring '5th Ju 42' on reverse. Scarce Provisional censoring service from Nkongsamba interestingly not censored in Doulala. Ex Maddocks.