It looks like a railway lamp to me, are there no manufacturer's marking's on it?
It's a Kosmos Brenner WWII German Military end of the train Railroad Lantern. There's a wick lamp inside as you know, these look great if you trim it up and get it going again.
'I do not think we can hope for any better thing now.
We shall stick it out to the end, but we are getting weaker of course, and the end cannot be far.
It seems a pity, but I do not think I can write more. R. SCOTT.
Last Entry - For God's sake look after our people.'
In memory of Capt. Robert Falcon Scott, Edward Wilson, Henry Bowers, Lawrence Oates and Edgar Evans. South Pole Expedition, 30th March 1912.