GREAT BRITAIN POSTAL HISTORY 1918 First U.K Aerial Post
Sale No: 48
Lot No:402
Symbol:
1911 (Sep 9) London to Windsor envelope proof in brown on light blue paper, without the Aerial Post logo on the flap, a KGV 1d tied by the London Aerial Post c.d.s code "4". Two small tone spots, otherwise fine, a scarce postally used proof. Photo on Page 58. (Image1)