1 cent type legend, colour error black on Prussian blue, in fresh color of the top margin (these partly separated and remainder of an hinge), on the right one tooth being missing, or else in very good perforation, mint with an almost complete original gum, merely centrically low fixation, the most sought-after color error of the French stamp classical music, pencil signature and Attestcopie Prof.Dr.Schollmeyer BPP for a former pair, Yvert no. 84, 15,000,-