1911 FIRST OFFICIAL U.K. AERIAL POST/"LONDON FORWARD" PRINTED BUNDLE LABEL. A good example (76 x 115) inscribed "TO London Forward" signed "SAR" (S. A. Roberts who was the Chief Aerial Post Officer) and with good strike FIRST UNITED KINGDOM/AERIAL POST LONDON date stamp SP 15 1911 die 2. These tags were used to "pre-sort" mail for onward delivery. Normal retail £375. Some creasing, small split and several tears but very scarce. (Ref 102847).