20 on 24 Pfg five year plan brownish carmine, new edition watermarked XII, block of four with left upper corner of the sheet, centric cancellation \"ALTENBURG (BZ LEIPZIG) 2 24.5.55\", faultless condition, scarce and decorative unit, photo expertize Mayer: \"the unit and the stamp are genuine. The condition is perfect. \", Michel 2.000.-