UPDATED - Volvo ÖV4 Jakob

I was also able to find in the States a model of this Volvo ÖV4.
I can give you a few updates since I was able to measure and inspect the model,

First of all the scale is more likely 1:76 than 1:87 ( H0 ).
I was not able to find the exact dimensions of the real car. I just found the length of the wheelbase. And compared with the model car, the scale is very close to 1:76.

The model is made of three pieces of brass : the body, the window frame and the steering wheel.
The steering wheel seems to have been soldered to the dashboard. The frame for the front window seems only to be plugged in the body. I have not tried to remove it.

The model is fixed on a wooden baseplate made of darkened Meranti. The size is 75x75x9.5 mm. The model is fixed with the four pins under the wheels plugged into four holes in the wood.

I still can't tell who made this model.