Description:

1920 (Jan 1) Adelaide-Victor Harbour-Adelaide #33a cover with violet 'Harry J Butler & Kauper Aviation Co Ltd' cachet and endorsed "per Capt Butler's Aeroplane from Victor Harbour" carried by Harry Butler in his Bristol monoplane 'Red Devil' on the return flight of the same day franked with KGV 1½d brown tied Adelaide roller cancel on arrival, light vertical fold not affecting stamp and small part back flap missing hardly detract, Cat $1,750. [less than six covers known from the return flight and none recorded from the outward leg; the Eustis example sold for $3,500]