1 Sgr. Black on pale carmine red, vertical pair from left margin of sheet with row number "7" and "8", having bright colors and on all sides full- to piece in outstanding quality with enormous margins, clear tied by two strikes of the number cancel "1161" - Prenzlau (government Bez. Potsdam) on piece, expertized Drahn and photo expertize Brettl International Association for Philatelie Experts: "finest and faultless condition. " and expertise Voigt VP (2019) : "the condition is perfect. "