The Museum on the Mardasson-hill has a modified OT posing as a 251.
Since 1976 there was a strange looking 251 in the background of the big diorama. strange nose, high stowage bins. It must have been a prop of plywood, on the base of a chassis. The museums comment standing with it says: Borgward. Possibly a Borgward produced chassis.
Where did it go? was it rebuild to a real 251?