1911 FIRST OFFICIAL U.K. AERIAL POST/LONDON POST CARD IN DARK BROWN/'WRIGHT'S COAL TAR SOAP ADVERT. Fine London post card in dark brown addressed to 'Mr J. B. Curvis Chemist 41 The Promenade Bridlington' with KGV ½d Downey cancelled good large part strike FIRST UNITED KINGDOM/AERIAL POST LONDON date stamp SP 9 1911 die 4. On reverse fine advert 'PRIZES FOR CHEMISTS. We cannot afford to give a £10,000 prize, but we do offer valuable prizes to enlist your co-operation in our View competition/£44 IN PRIZES TO CHEMISTS. Keep this souvenir of the first U.K. Aerial Post./Write for particulars to WRIGHT'S COAL TAR SOAP.... Southwark Street, S.E.'. (Ref 119455).