Camerouns. (Nigeria). 1943. Air Mail envelope addressed to London bearing French Cameroun Yvert 131,10f violet and orange (pair) and Yvert 256,1f50 carmine (pair) tied by Douala date stamp '4th Aout 43'. endorsed 'via Amerique' with framed 'Par Avion' and instructional Jusqu a destination' with circular 'Control Postal/ Commission A/ Territoire du Cameroun' on face and routed via Senegal with 'Controle Postal Militaire' label tied by oval 'Ouvert/ Par / 1'Autorite Militare' and 'Crown/11/28' Nigerian censor cachet with Lagos transit on reverse '6th Sept'. Nice item sent the double Atlantic route .Ex Maddocks.