Post & Go : Royal Mail Heritage : Mail by Air

Issue Date - September 13, 2017

SG FS185 - First UK aerial mail, 1911, 1st

SG FS186 - Military mail flight, 1919, 1st

SG FS187 - International airmail, 1933, 1st

SG FS188 - Domestic airmail, 1934, 1st

SG FS189 - Flying boat airmail, 1937, 1st

SG FS190 - Datapost services, 1980s