This is a fine Duffner & Kimberly Leaded Glass Lamp in wonderful condition. The lamp stands 23 inches tall on its 7 inch part cast iron base and weighs in at over 17 pounds. The shade is 17 1/2 inches in diameter and 6 1/4 tall with a 3.5 inch aperture. The lamp is unsigned but for some numbers on the bottom of the base. It is, however, pictured two times in Paul Crist's book, "Mosaic Shades, Volume 2", but without the 4 feet on the base. The feet and the base have the same numbers on them "3086" and are original to this particular base. The shade support and the heavy brass patinated cap are also original Duffner & Kimberly and are also pictured in the book. Most all of the original finish is there with some wear to the high points of the Brass feet and some of the sculpted parts of the main column. Simply a good looking lamp.  The shade is also unsigned and is a D & K pattern also pictured in the book. It could be a reproduction, since unsigned, but if it is a reproduction, it is very well made and looks wonderful with great colors and about 700 pieces of glass in it and a 3.5 inch aperature in it as mentioned before.The lamp has been correctly rewired using its original porcelain sockets and works perfectly. Just a great looking lamp for your home or office.