1911 FIRST OFFICIAL U.K. AERIAL POST/USED LONDON POST CARD IN RED-BROWN. Good to fine example (minor corner bend) of the London post card in red-brown with KGV ½d Downey cancelled good strike FIRST UNITED KINGDOM/AERIAL POST LONDON date stamp SP 15 1911 die 2. Addressed to Hoddesdon, Herts. (Ref 104487).