Hi, I have recently found my grandfather's old Half Mile Ray searchlight. I've spent hours trying to figure out how old this is, what model it is, if it's worth anything, etc. etc. etc., but I have had NO luck at all. All of the other Half Mile Ray searchlights I find have model numbers on the label, but mine does not. Does anyone know why that is? Or what it is exactly that I have? I don't remember anything about it from my childhood, so I am totally lost. Any help you can offer would be greatly appreciated.