Vintage working ships Pualuhn Marine explosion-proof drop light 5lbs Cast Bronze (very heavy).  The light has been rewired and ground added for safety. New wire is NOT vintage but makes light safe and functional. These were typically used aboard ships and vessels in explosive environments like an engine room.  This could easily be rewired again with age replica wiring.  The light is 42cm long and 11cm in diameter at the cage. I was unable to specifically date this light but estimate it was made in the 1940's.