35 Pfg olympic games watermarked YI, used "Leipzig C11", except for perforation fault left and at the bottom on the right - according to certificate due to the rarity to tolerate - in perfect condition, photo expertize King BPP: "the test specimen is genuine. [. . . ] apart from that is the stamp perfect. Up to now are only very few known pieces. ", Michel unpriced (for mint never hinged 1.100.-)