6 Pes. 25 C. on 5 Mark "Reichspost", block of four with types (upper left to lower right): 19 I/IV + 19 I/III + 19 I/I and 19 I(IV, overprint type I, mint never hinged, perfect condition, very rare multiple, expertised Georg Bühler and Ronald F. Steuer BPP photo certificate "very rare multiple...faultless mint never hinged condition.", Mi. 5.550.-++