1911 FIRST OFFICIAL U.K. AERIAL POST/LONDON POST CARD IN OLIVE-GREEN ADDRESSED TO IRELAND. Fine example of the London post card in olive-green with unused ½d Downey at upper right and addressed "Captain C. G. S. Harvey, The Barracks, Athlone, Ireland", unposted with note on reverse which explains - "First day of the Post from Windsor to London. But the wind is so high I do not believe they will go. G. H.". (Ref 102819).