Vintage Underwriter Laboratories Working Crystal Lamp

Cut crystal and brass lamp with diamond and fan cut design. Base hard or finial only. No shade. Vintage lamp in excellent condition with no chips, cracks or repairs. Brass base is in good vintage condition. Minus age spot (last photo) about the size of a pencil eraser Bottom cover of is loose. Electric cord is original to lamp and is in very good condition, no visible damage. Three-way switch. Takes medium base bulbs. Approximate measurements: 14 5/8"H to bulb holder Base diameter: 4 3/8"