5 Pfg on 10 Pfg vivid purple red steep overprint "China", blue line, MINT NEVER HINGED vertical gutter pair, upper stamp in rare overprint type 3 b (happening only 1 x in the half sheet on field 47 or 97, here field 47) and lower brand in type I (field 57). Gutter pairs are extremely rare since the sheets as a rule were separated horizontally after production in the middle. Also in greatest special collections such a gutter pair is missing or was missing. This was shown in the new printing Friedemann/Wittmann already shown in the impression of 1926. The valuation of Michel is a farce. Certificate Jäschke-L. BPP (11/2011) in fresh color is in mint never hinged condition, perforated very well, and doesn't show any further defects except for a horizontal small crease in the gutter " ... No signature ".