2 Groschen large shield, gray ultramarine, special feature \"vertical strong about 3, 5 mm to the right displaced perforation, through it left numeral of value of the right neighbor stamp\", tied by horseshoe cancel \"Osnabrueck 30 Jun 74\" (Spalink 30-2) on piece, photo expertize Krug BPP: \"the stamp with age shading is clearly embossed, as usual perforated and in perfect condition. \", such strength perforation varieties are rare, actual has the Empire printing office those ascertained.