Large ceramic lamp base with dual lighting

Large glazed ceramic lamp base with dual lighting. Typical style from the 1950s-70s. Geometric design allowing light to pass through. Blue glazing with variations of grey, of good quality and textured. In good condition and functional. Please note that the neck of the lamp base has been re-glued, but the repair is solid and not very noticeable (see photos). Height with the socket: 42cm. Diameter: 22cm. Heavy lamp base: over 4kg. Leaf-shaped signature under the base to be identified. Bulb and shade not included.