Not issued: 12 Pfg Potschta in oil paint, block of four from upper right corner (field 9 / 10 and 19 / 20), mint never hinged, besides field 20 in the margin of sheet a slight fingerprint the a little on the stamp passes, expertized Richter and further signature, photo expertize Jens Kunz BPP (2021), Michel 2.000.-