140778 1911 FIRST U.K. AERIAL POST, LONDON ENVELOPE IN PURPLE-BROWN TO VIENNA WITH KING EDWARD VII AND KGV STAMPS.

1911 FIRST U.K. AERIAL POST, LONDON ENVELOPE IN PURPLE-BROWN TO VIENNA WITH KING EDWARD VII AND KGV STAMPS. Good to fine used London envelope in purple-brown to Vienna, Austria, with King Edward VII ½d yellow-green and 3d purple/yellow also King George V 1d red tied fine strikes 'FIRST UNITED KINGDOM/AERIAL POST LONDON' date stamps SP 9 1911, die 1. Small tear at right but an attractive and very scarce usage. (Ref 140778).