1881 / 1920, nice collection with 13 different, mostly from Dr. Helbig BPP expertized values, as well in unused Michel no. 48, 60 x a, 62 x, 63 x, 194 U, 195 U, service 22 x and postage due stamp 4 as well in mint never hinged Michel no. 178 U, 192 U, 193 U and service 16 x, Michel value 280.-