1950, private postal service delivery certificate (contents) for a package with anchor cash registers postal meter cancellation 20 Pfg. and postmark BERLIN W8 4. 12. 50, in addition to it 2. contents with on the back violet L4 "checkpoint post office Berlin O17. . . . " and sender adress part the package card, always slightly on 2 Unterlagengeklebt, in this combination perhaps unique piece!