Description
1911 FIRST U.K. AERIAL POST LONDON ENVELOPE IN RED TO ETON, WINDSOR. Good to fine London envelope in red to 'Mrs Austen, 89 High St, Eton, Windsor' with KGV 1d Downey tied fine strike 'FIRST UNITED KINGDOM/AERIAL POST/LONDON' date stamp SP 9 1911 Die 2. With insert. (Ref 141308).