Three German Imperial First World War Flyer Picture Postcards

The first postcard illustrates a standing Lieutenant Wüsthoff wearing the Iron Cross 1st Class 1914 and the Pilot's Badge, inscribed "Unser erfolgreicher Kampfflieger/ Leutnant Wüsthoff" below, "564 / Postkartenvertrieb W. Sanke BERLIN N.37. / Nachdruck wird gerichtlich verfolgt." at the lower left, studio marked at the lower right, 84 mm x 135 mm. The second postcard illustrates Lieutenant Wüsthoff leaning against a bureau, wearing the Pour-le-Merite, the Iron Cross 1st Class 1914 and the Pilot's Badge, inscribed "Unser erfolgreicher Kampfflieger/ Leutnant Wüsthoff" below, "588 / Postkartenvertrieb W. Sanke BERLIN N.37. / Nachdruck wird gerichtlich verfolgt." at the lower left, studio marked and inscribed "Phot. Hugo Erfurth, Dresden." at the lower right, 86 mm x 135 mm. The third postcard illustrates a seated Captain Brandenburg, wearing the Pour-le-Merite and the Iron Cross 1st Class 1914, inscribed "Hauptmann Brandenburg, welcher das Geschwader deutscher Grossflugzeuge beim Angriff auf die Festung London führte." at the upper left, "536 / Postkartenvertrieb W. Sanke BERLIN N.37. / Nachdruck wird gerichtlich verfolgt." and studio marked at the lower right, and "Prof. Krauth, phot." at the lower left, 86 mm x 135 mm. Black and white, matte finish, on card stock, each with postcard backers, extremely fine.