1, 50 Karbowanez medium brown on vertically striped thick paper, Type I, variety "double imprint", as issued mint never hinged, without gum, slightly faded in the center of the stamp, typical perforation for the issue, great rarity of the area, signed Bulat et alia, photo certificate Gerhard Krischke BPP "...so far only 7 examples are known. ", Michel 4. 500.-