That sounds like a nice lantern, Harry. I only have one Mill lantern and it has old red paint which I believe to be original but am not sure. I would think these would typically have a clear globe. My understanding is these were used by night watchmen in high-risk flammable factories. The locking cage was supposed to prevent the watchman from diddling with the flame which might cause an accident. I think this was an underwriters requirement. These watchmen sometimes had to visit alarm stations and insert a key which recorded that they made their rounds and visited each station at the appointed time.