Camerouns. (French Camerouns). 1941. Air Mail envelope addressed to Nigeria bearing French Camerouns Yvert 225, 1f50 brown (3) tied by Douala/ Cameroun date stamp with 'Controle Postal/ Commission A/ Territoire du Cameroun' negative censor and 'Controle Postal Militaire' label tied by oval 'Ouvert/ Par/ L'Autorite Militaire' cachet with framed 'Censor' in red and Lagos arrival.