British West Indies. (Barbados - Nigeria). 1942. Air Mail envelope addressed to Barbados bearing SG 57, 1/3d turquoise tied by Lagos double ring '10th Aug 42', endorsed 'via North Atlantic Route' with framed triangular 'L/5 on face in violet, 'P.C. 90/ Opened By Examiner' label tied by 'Passed Censor/ Nigeria'/ 12' with bold red vertical lines over the 'Air Mail' etiquette and Barbados receiver '11th Dec 42' on reverse.
Framed censor 'L/5' John Little Type 111C only number '6' recorded by Little.
The Red vertical line Jusqu'a mark applied at Office of Exchange.