Souvenir sheets issue German stamp exhibition DEBRIA with plate flaw III \"slanting white line over \'1\' of the date \'9.3.1950\' at the right sheet margin\" (only in a part of issue occurring), in perfect condition mint never hinged, unsigned, photo expertize Mayer VP: \"the souvenir sheet is genuine and has original gum. The condition is perfect. \", Michel 500.-