10 Pfg. on 20 Pfg. blue, vertical 14er radian from the sheet center with center piece 1 above and 2 at the bottom as well additional 3 horizontal gutter pairs with overprint types combination "IIIa / Z / IVa", neat cancelled, superb in every respect (choice copy), certificate with photograph Gruber BPP: ". . . Genuine and in perfect quality"!