Switzerland. (Nigeria-Bermuda). 1943. Air Mail envelope addressed to Libreville, Gabon bearing Switzerland Yvert 295, 30c blue and 1f 50 blue (pair) tied by Geneva double ring '24th Mars' with German censor tape tied by circular 'Ab' applied in Berlin, routed across the Atlantic, intercepted by the British in Bermuda with 'Opened by Examiner/ 3674' censor tape and endorsed 'I.C.', forwarded via Nigeria with horse-shoe 'Censor' hand-stamp in carmine and 'A.E.F.' censor tape tied by 'Controle Postal/ Commission C/ Afrique Equatorile Francais' with oval 'Ouvert Par/ L' Autorite Militaire' and Libreville/ Gabon receiver '18 Juin' on reverse. Superb item twice sent over the Atlantic.