Description
1911 FIRST OFFICIAL U.K. AERIAL POST LONDON EMERGENCY ENVELOPE IN OLIVE GREEN TO WINDSOR. Used 1911 first official U.K. aerial post London emergency envelope in olive green to Windsor with KGV 1d Downey cancelled fine large part strike 'FIRST UNITED KINGDOM/AERIAL POST LONDON' date stamp SP 12 1911 die 3. Some soiling, particularly on reverse but priced accordingly. (Ref 139717).
