Vintage old brass Justrite miner's carbide lamp helmet light, spelunker/caver lantern

Old brass USA made, Justrite miner's hard hat helmet or spelunker's underground carbide lantern. This measures about 4 1/2" high, 4" across the reflector and 3 3/4" high and 2" across the lamp body. It has a hard rubber or plastic grip marked "Justrite - Air Cooled Grip".

We don't know much about this, if you have questions, please email us.