1 Sgr. black on pale rose, on all sides having full margins and fresh colours outstanding quality from right margin of sheet (2 1 / 2 mm), clear cancelled by official seal "PR. post EXPED REHDEN crown posthorn" cancel (administrative District Marienwerder), very rare as stamp killer occurring, expertized Grobe and photo expertize Brettl International Association for Philatelie Experts (2012) : "In finest, perfect condition. extremely rare devaluation type. " and expertise Voigt VP (2019) : "the condition is perfect. as cancellation on stamp very rare, only a few examples known.