Wer einmal in das Posthorn stößt (1973)

Things may not be fast at the German post office, but they're a lot of fun: postal supervisor Max Sparwein knows a thing or two about it, because he really can't complain about boring and monotonous service on his tour through the city. This is also the experience of journalist Mara Schönwetter, who accompanies him on his walks up and down the stairs to write a report.