1894-98 Mi.U5 and U6, comp. of 2 postal stationery covers with printed stamp 5C Wilhelmina blue, uprated with stamp 7½C, both addressed to Germany, CDS ZEIST and AMSTERDAM, on reverse arrival postmark BARMEN and HAMBURG, 1x with light fold in lower margin 1932 ZEPPELIN / FAHRT NACH DEN NIEDERLANDEN, sent by airmail, uprated PC to Germany, CDS ROTTERDAM 15.VI.32, supplemented with MC FRIEDRICHSHAFEM 19.6.32 and blue flight cachet; good condition