If I recall correctly, this is - or was - considered something of a cult film and required viewing for film students and aficionados as recently as the 1980s. If this is still the case, I couldn't say.
Edgy editing and camera angles give it a somewhat 'artsy' feel and it probably does provide a fairly realistic picture of Weimar Germany. Putting this film and 'Hitlerjunge Quex' on one disc or in one set would be a masterstroke of juxtaposition.