This engine compartment light was Made in Germany by Hella between 1953-1955 for vintage VW Beetle. A VW Oval and VW Split edition was available.

You can find some more information on thesamba.com forum on topic Rare Engine Compartment Light. A similar engine compartment light was made by SWF.

Here pictures of the rare Hella engine compartment light for vintage Volkswagen, scanned from 1955 Hella parts catalog.

Hella engine compartment light (Motorraumleuchte) for vintage VWs, scanned from 1955 Hella parts catalog