1951, used collection Posthorn with many pairs and souvenir sheets of 4, including Mi.-Nr. 123-138 in souvenir sheet of 4, except Mi.-Nr. 137 complete (partly sign. and Mi.-Nr. 132 and 138 with certificate H.-D. Schlegel BPP 1998/2002), furthermore souvenir sheet of 9 Mi.-Nr. 135, etc., partly sign. Schlegel BPP, mostly good condition
