Are you sure about it being a 5/17? The small NSU of the early 20s is usually referred to as the 5/15 PS.
The bodywork of the Taube is a double phaeton with the possibility to attach a hardtop called Capot, as in the puzzle picture. I guess the bodywork was done by Schebera, as NSU offered several bodies for their cars and Schebera as well as NSU both belonged to Jakob Schapiro's short-lived car empire.