Pair of table lamps Studio Ceramic Italy signed 1970s

Pair of two ceramic table lamps, handmade and signed, Italy, 1970s.
The lamps made of matt glazed ceramic with a graphic pattern and renewed shades made of canvas (cotton) are without any damage, the condition is very good, only the cable, switch and socket show traces of time in the form of yellowing, see pictures.
Both lamps are in the same condition and signed.
The signature is unknown, any information is very welcome!