1911 FIRST OFFICIAL U.K. AERIAL POST/LONDON POST CARD IN OLIVE-GREEN TO GERMANY. Fine London post card in olive-green (small corner bend) to Berlin, Germany with KGV ½d Downey x 2 cancelled good strike FIRST UNITED KINGDOM/AERIAL POST LONDON date stamp SP 15 1911 with the scarcer die 5. (Ref 105659).
