50 Pfg diagonal overprint, date-appropriate slightly and exactly centric cancellation "PONAPE 14 / 11 00", outstanding quality, signed twice Buehler and twice signed Bothe BPP as well photo expertize Dr. Hartung: "fresh colors, very well perforated and in faultless, used condition. With the centered print of a postmark and the outstanding condition an especially nice copy of this stamp! ", Michel 1. 800.-