1919 (Jan 9), "POSTAL SERVICE M.E.F./AERIAL POST - BAGHDAD-DELHI/PER/HANDLEY-PAGE AEROPLANE" cachet in magenta on field post cover from F.P.O. 55 at Baghdad to Scotland, with double-ring despatch datestamp on front, circled cachet "CARRIED BY AERIAL MAIL/BAGHDAD-DELHI/JANY. 1919" in violet and Delhi dater on reverse. AN EXTREMELY RARE COVER (OF ONLY 6 KNOWN) CARRIED BY THIS 1919 BAGHDAD-DELHI FLIGHT. (Image)