Persian Gulf. (Bahrain). 1938. Air Mail envelope addressed to London bearing Bahrain SG 4, 1a chocolate (pair) and SG 21, 1/2a brown tied by Bahrain double ring '18th June 38'. Nice item sent by Imperial Airways. Ex Proud.
18th June 1938. Bahrain to UK. By IW662 which left 20 June and arrived UK 23rd June. Franked 2 1/2A for All Up rate.