Looking for flashlight from the Alien movie

Hi! I am looking for any tips on the flashlights /searchlights used in the movie Alien (1979). One type was mounted in the ceiling on the Nostromo bridge: https://alienseries.files.wordpress.com/2012/10/normal_productionstill99_005.jpg. Another a more portable version: https://embed.gyazo.com/6ab96f4d93e74e06c25e362ef113c071.png. The head of the light looks the same in both versions, but the bases differ. Looking at stills from the movie suggest that there is always a cord attached (spiral, maybe to a car battery?), and not cordless/battery powered.

They might have been built specifically for the movie set of course, but if not I don't know any better place to ask for help than here!

The movie was shot in UK, not far from London. I have tried looking into UK manufacturers from the 70s, but so far I have nothing. All tips welcome!

Try in the Flashlights in TV shows and movies mega-thread.

Looks like a lantern turned into a prop for sure. Wish I could help more. I would suggest you search Lanterns from the 70's. See if you find something that sorta resembles it?

total prop. Well done but I would be surprised if they were even wired to work. Look like a futuristic cheap 6 volt camping lantern

It did work though: http://imgur.com/5HvFG1d.