50 K. definitive, imperforate, sheet position 17, type I, unused without gum as issued, only 1 sheet = 25 values printed, of these only 15 type I examples, photo certificates Gerhard Krischke BPP and Walter Zirath BPP (2022) "The condition is faultless. The stamp is unsigned." Mi. 11.000.- One of the greatest rarities of the German occupation issues of World War II!