50 Pfg Germania with overprint "commission / Interalliee / Marienwerder" from the third printing plate overprintfeld 4, first printing period, in perfect condition mint never hinged, signed Mikulski, boar, AG (fools about Gallitsch) and certificate with photograph Thilo Nagler VP (2015) : "genuine and immaculate", Michel 1. 000.- - very scarce and undervalued stamp!