10 Zl. Buildings castle Cracow unperforated with right margin of sheet, mint never hinged with full original gum, entirely unsigned, all side evenly well wide margins, faultless condition, outstanding quality, of the unperforated remained stamp existed only an only sheet to 25 pieces, of these only a few have become known are, as those with margin of sheet and RWZ unique, rarity and exhibit highest order in perfect condition, photo expertize Swiss BPP (2017) "the stamp is one of the large rarities of the Command. . . . The stamp is genuine and immaculate. ", Michel 5.000.-