50 Pfg vivid reddish brown, vertical pair together with vertical strip of three 20 Pfg medium-ultramarine on linen on piece, three cancels "KDPA SHANGHAI 7/2 91". At the upper 20 Pfg stamp a perforation damaged, or else in fault-free condition and imposing on piece with a rare postage paid combination, certificate Jäschke-L. BPP, Michel 520.-