Not sure if that is part of the original manufacture, or added later for some reason. Glass pyrex globes are in excellent condition. Both are marked "The Adams Westlake Company Chicago". The bottom knob twists off and is spring loaded to hold a candle up through the top. If you don't want the mirror/shelf that these have been attached to, let me know when paying, and I can remove the brackets and send you just the lamps with brackets.If you have any questions, feel free to ask. The item "Adams & Westlake Railroad Mail Car Caboose Candle Sconce Lamps Northern Pacific" is in sale since Tuesday, April 28, 2020. This item is in the category "Collectibles\Transportation\Railroadiana & Trains\Hardware\Lanterns & Lamps". The seller is "hardwaterfun" and is located in Central, MN. This item can be shipped to United States.