Retailer Vintage Night Watchman/Guard Lamp

Vintage European - Hungarian - night watchman lamp made of black metal. Possibly 50s/60s. On off switch on the back of the headlamp, compartment for holding a very large old school battery, this can be seen by the connection.There are rust spots in places and surface rust inside, as in the images. The front of the compartment is slightly bent at the top so the lid won't close completely on one side.
Dimensions: Height 400mm x Width 150mm x Light diameter 120mm retailer