1911 FIRST OFFICIAL U.K. AERIAL POST/LONDON POST CARD IN RED-BROWN LONDON TO BELGIUM. A fine example of the London post card in red-brown from London to Heylissem, Belgium with two fine examples of the KGV ½d Downey, each cancelled good strikes FIRST UNITED KINGDOM/AERIAL POST LONDON date stamp SP 9 1911 die 1. Alongside superb NEERHEYLISSEM date stamp 13 IX 1911. Most attractive overseas usage. (Ref 102810).