1 Sgr. Rose, smooth ground, having full margins and having bright colors outstanding quality, tied by scarce locate single circle postmark "ISSUM 3 5" (government Bez. Düsseldorf), expertized Drahn, photo expertize Brettl International Association for Philatelie Experts (2013) : "in fine, perfect condition. " and expertise Voigt VP (2019) : "genuine and immaculate"