1911 FIRST OFFICIAL U.K. AERIAL POST/LONDON POST CARD IN OLIVE-GREEN TO CANADA. Good London post card in olive-green addressed to Toronto, Canada with KGV ½d Downey x 2 cancelled fine strike FIRST UNITED KINGDOM/AERIAL POST LONDON date stamp SP 9 1911 die 2. Corner bend but nice usage to Canada with good message "The first Post Card to go by Air! In a few years I suppose all letters to Canada with be sent overhead all the way". (Ref 104366).