1911 FIRST U.K. AERIAL POST LONDON ENVELOPE IN SCARLET TO TONBRIDGE. Very fine London envelope in scarlet with insert to 'Mr. C.L. Fox, Puttendon Manor, Tonbridge' (Kent) with King Edward VII 1d scarlet tied very fine strike 'FIRST UNITED KINGDOM/AERIAL POST/LONDON' date stamp SP 11 1911 Die 3. On reverse 'TONBRIDGE' date stamp SP 17 11. (Ref 150740).
