Unknown huge lamp from a train with WaA-Abnahme

[Gabbertje]

Hi folks,

I have a little mystery here in my collection.
It is a nice and untouched huge train?-lamp from the Wehrmacht.
It's painted in a nice eary fieldgrey and dated with 1937.
My first thought was clearly an lamp for a train.

Does anyone know such a lamp?


Best regards,

Stefan

[Gabbertje]

Some more pictures.