£90
GB.FIRST DAY COVERS 1911 FIRST AERIAL POST. First and Last Day items. Rose coloured London to Windsor envelope sent to Germany with 1d red stamp tied SP 9 1911 special cancel of the first day, and green Windsor to London post card with ½d green stamp tied SP 16 1911 Windsor special cancel of the last day (2 items) Lot 1815 (P) [a]
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