50 Kopecks black on dark gray blue, imperforated, horizontal pair with stamps in type I and VII, positions 8 / 9 with complete overprint "proof print", as issued unused without gum, the right stamp from position 9 point at the composition error VII on which just once in the sheet occurs, the edition of the left stamp from position 8 in type I amounts 15 examples, therefore places the horizontal pair a unique piece dar and is one of the largest rarities of the German occupation issues in the II. world war, signed Z. Mikulski and photo expertize Walter Zirath BPP "the condition is perfect. ", Michel 36.000.-