20 C. postal stamp in the horizontal pair with overprint in type II, in perfect condition unused with full original gum and small rest of hinge, reverse partial cancel of the authentic Postmark from "Coudekerque business" being an authenticity confirmation, unsigned, photo expertize Lothar autumn VP (2016) : "the condition is perfect. Due to the very small issue from only approximate 80 till 100 pairs are these stamps very rare. "