Vintage black and white murano swirl glass table lamp by Renato Toso for Leucos, 1970

This is a unique Italian table lamp made of Murano glass. The hand-blown black and white glass has a spiral pattern around the edge of the shade and base. The area with the black glass swirl is clear while the rest of the shade and body are translucent white. A black enameled metal cap sits atop the glass shade. In-line three-way on/off switch. Base and shade are lit at the same time. Accepts four base bulbs under the glass shade and one base bulb in the trumpet-shaped base. This piece is attributed to Roberto Pamio and Renato Toso for Leucos but is unmarked.