This pendant lamp was designed by Renato Toso and produced by Leucos in Italy, during the 1970's. It is made of a thick piece of murano glass, that goes from opaline white to transparent. With the original label of the manufacture and marked also on the bulb socket. It is a E27 fitting. In original and good vintage condition.
Murano Glass Ceiling Lamp by Renato Toso for Leucos, 1970s