As you can see from the photos, this box was just opened to reveal the NOS Hella 9.5 inch diameter headlight assembly for the models of the 50’s like the Adenauer and W128, W180 Pontons.
This includes the light bulbs and electrical assembly on the back. The reflector and bucket plus the 9.5 in.chrome ring.

I also have another one listed without the electrical back.
NLA and the last price from MB was around $1700