Vintage Blue "K" Glass Lens Railroad Traffic Signal Lens Lamp Lantern 5.50"

Vintage Blue "K" Glass Lens Railroad Traffic Signal Lens Lamp Lantern 5.50" Assuming the brand is the embossed K with the circle around it. I don't think this has ever been used. Thanks for looking! Smoke-Free Home Please see the photos for details. Do not hesitate to ask questions before purchasing. Lucy and The Guy