Hi Burkhard:
I think I can now feel a little more comfortable with the point with the following information.
Mr. Rasmussen, who I gather owned Framo, wished to expand his business and offered to the Wehrmacht a small number of prototype cross country Kubel type cars in 1937. One source which I have not found always accurate says 7 prototypes were made.
Edit:
I re read the prospectus and it says 6 test vehicles were made. As well, my extra photo was also on that prospectus.
The vehicle did not meet the Wehrmacht's standards and the vehicles were released for export.
Lithuania purchased 4 of these small cars on 27 June, 1937 for use as "communication cars". The translation from Lithuanian to English where I found this was a little bit tricky but I think I got most of it right. The cars were apparently still in use up to 1940 at the start of the war there and then they seem to have disappeared.
I also found what I assume is the same advert for the same prospectus you mentioned but that was pretty much all technical data and sales/marketing arguments for the vehicle, nothing really about it's history.
There is apparently a fairly new book on the history of Lithuanian military vehicles up to 1940 available and I will try to get that and see if I can come up with any more information.
Here is one more photo which may have also appeared in the prospectus, I forgot to look.
Bill