400 thousand on 25 penny, variety \"without overprint\", three values inside a block of twenties, the variety emerged through sheet cover before the 2. Printing cycle, in perfect condition mint never hinged, photo expertize Weinbuch BPP: \"the condition is perfect. An existing crease and on the back offset the two upper stamps corresponds the development this through sheet cover emerged rarely variety. \", Michel 1.500.- (free of premium for the scarce unit respectively pairs \"with and without overprint\")