1927. Envelope (corner faults, toned) headed 'via Air Mail Service Basra-Cairo' addressed to London bearing SG 110, ¼a on ½a green, (block of eight), SG 155, ¼a, green and SG 171, 2a6p blue tied by Bombay double ring '11th May', hand-stamped 'Urgent' with framed 'Air Mail Service/Basra-Cairo.(Karachi G.P.O.) in red on face and Basrah transit '19 May' on reverse. Nice item from the Cairo Basrah extended route on Imperial Airways.