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Freiherr von Richthofen by C. J. von Dhren. en Postcard Photo signed Frei Richthofen with his rank Rittmeister Cavalry Captain and the date II written in black ink on the lower portion of the photo Sanke postcard Printed at the top edge is Unser erfolgreichster Kampf Flieger Freiherr von Richthofen Our most successful fighter