1 Sgr. Black on rose, block of four from left margin of sheet with row number "10" and "11", having bright colors and having full margins extremely fine copy, unused with original gumming, rare - in particular with the row number, photo expertize Flemming BPP "very scarce unit with decorative effect. " and expertise Voigt VP (2019) : "the condition is perfect. Scarce unit from margin of sheet. "