5 ++ 10 Pfg fatigue duty, proof in brown carmine, lower part the drawing non-completed (condition print), unperforated, paper size 74 x 112 mm, mint never hinged, very rare, expertized Ludin BPP and photo expertize H. G. Schlegel BPP "the copy is genuine and point at original gum on, with front- and reverse [herstellungsbedingten] traces of paint. ", by Michel unknown