1911 FIRST OFFICIAL U.K. AERIAL POST "S. E. LONDON DISTRICT" PRINTED BUNDLE LABEL SIGNED BY THE POST MASTER OF WINDSOR. A very fine example (114 x 76) inscribed "S.E. London District", with fine strike FIRST UNITED KINGDOM AERIAL POST LONDON date stamp SP 9 1911 die 1 and signed "A T A'Vard/Postmaster Windsor". These tags were used to "pre-sort" mail for onward delivery. Slight creasing but a superb and rare item. (Ref 102853).