10 C. on 10 Pfg. Germania on return cover from BRUSSELS 25.2.1915 with seal stamp of the Kaiserl. In Belgium (trace of folding) and Ra2 "in Brussels receiver/sender don't find postoffice 1 out Deutsche Post and telegraph administration", envelope opened three-sidedly of on the reverse not quite complete, on face visually fine need piece with this rare seal stamp, only few pieces known!