1911 FIRST OFFICIAL U.K. AERIAL POST/LONDON RED-BROWN POST CARD ADDRESSED TO AUSTRIA. Good used example of the London post card in red-brown from London addressed to Graz, Austria with KEDVII ½d and KGV ½d Downey cancelled very fine strike of the FIRST UNITED KINGDOM/AERIAL POST LONDON date stamp SP 9 1911 die 1. Slight creasing but fine and unusual overseas usage. (Ref 102811).