1911 FIRST OFFICIAL U.K. AERIAL POST/LONDON POST CARD IN OLIVE-GREEN TO GERMANY/MIXED REIGN USAGE. Very fine London post card in olive-green addressed to Hamburg, Germany with attractive combination of King Edward VII ½d yellow-green and KGV ½d Downey arranged in tete-beche style and cancelled light strike FIRST UNITED KINGDOM/AERIAL POST LONDON date stamp SP 9 1911 die 2. Very clean overseas usage. (Ref 104373).
