When it occured at this very fine austrian website I was electrified,
because I do not know any other comparable big pre-war Borgward with integrated headlights.
I´ve even contacted several Borgward experts like Peter Kurze last year to get some informations about this very car and they all quit.
Here´s all I have on my HDD. On top are the well known big Borgwards,
at the bottom the three pics of our mystery car.
I´ve found a source that talks of a Hansa 3800, but there´s no photo -
maybe it is an evolution of the 3500 with the free headlights?