Vintage Walter. Von Nessen bauhaus revival swing arm desk lamp in brushed aluminum finish. Comes with original lampshade and finial and also has a perforated metal diffuser. First click on the on/off knob turns on the first light socket, second click turns it off and turns on the second light socket, third lick turns both sockets on and fourth click turns both off. Diameter of the lampshade is 14" and the height is just shy of 5". Overall width of lamp when the arms are not extended (lead photo) is 16" and 25" wide when fully extended. If you are interested in arranging a viewing of this lamp in person please reach out at [email protected]