The only mark is pat applied for on the the shade. It is in excellent condition. I plugged it in for the photos, but the cord is very old, appears original and needs replacing to be safe. This is for liability reasons. Have this lamp rewired for safety.
The item "Antique Cast Iron Slag Glass Mission Arts and Crafts Night Light Miniature Lamp" is in sale since Sunday, November 1, 2020. This item is in the category "Antiques\Architectural & Garden\Chandeliers, Sconces & Lighting Fixtures".
The seller is "saffycat" and is located in Oakland, California. This item can be shipped to United States.