found something on the internet..
The picture shows a 1:5 wooden model of a virtually 1951 Opel Kapitän based car.
It was Heinz Elschenbroich's own former, but never realized car project.
H. Elschenbroich was main sponsor and shareholder of M.E.V. (Müthing, Eschenbroich & Volkhart) Studiengesellschaft für Fahrzeugentwicklung in Herne.