Blue glazed stoneware lamp foot signed 60s or 70s

Signed glazed stoneware lamp base (signature not identified). The 60s or 70s. Very beautiful shades of blue. Lamp in working order, it just lacks the lampshade, if you want to put one! The lamp is delivered without bulb (screw bulb). There is a screw washer (inner diameter 3.6 cm) that allows you to hold the shade if necessary (photos 3 and 4). In photo 7, I showed the system inside the foot that allows you to fix the socket, if you ever want to change the socket or wire. Height of the ceramic part: 13 cm. Lamp condition: very good condition, no lack.