WOISCHNIK 2.6.1920 ZKr (OS handbook number 365.1) on value letter (indication of value: 400 Mark) with 5 Pfg block of three, horizontal pair, four single stamps numeral of value 1920, 10 Pfg orange red horizontal pair, 15 Pfg gray violet block of six, 20 Pfg light blue ironworks and dove 1020 to Berlin, time typical traces of age and usage