Funkkraftwagen a und b (Kfz. 72) mit Fahrgestell des m. gl. Lkw. (o)
There was a whole range of different versions of the Kfz. 72. The shown vehicle is most probably a Funkkraftwagen a or b - radio motor vehicle a or b - (Kfz. 72). These variants had no radio mast at the rear of the box body.
A separate 10 m Steckmast - radio mast - could be assembled from the bars stored on the left side of the box body.